To solve this problem, we'll use a Venn diagram to represent the different modes of transportation people use to travel to work. We'll calculate how many people use each mode (or combination of modes), and then subtract the total from the number of surveyed people to find out how many people travel to work in some other way.

Step 1: Define the sets

• Let $P$ represent the set of people who took public transit.
• Let $D$ represent the set of people who drove.
• Let $C$ represent the set of people who cycled.

Step 2: List the given data

• $|P| = 1978$ (people who took public transit)
• $|D| = 1494$ (people who drove)
• $|C| = 818$ (people who cycled)
• $|P \cap D| = 731$ (people who took public transit and drove only)
• $|P \cap C| = 298$ (people who took public transit and cycled only)
• $|D \cap C| = 27$ (people who drove and cycled only)
• $|P \cap D \cap C| = 164$ (people who used all three modes)

Step 3: Use the Venn diagram formula

To find the number of people who use each mode or combination of modes, we'll use the principle of inclusion-exclusion:

$|P \cup D \cup C| = |P| + |D| + |C| - |P \cap D| - |P \cap C| - |D \cap C| + |P \cap D \cap C|$

Substituting the values:

$|P \cup D \cup C| = 1978 + 1494 + 818 - 731 - 298 - 27 + 164$

$|P \cup D \cup C| = 4290 - 1056 + 164 = 3398$

Step 4: Calculate the number of people who travel in some other way

The total number of people surveyed is 3000. The number of people who use any of the three modes of transportation is $3398$.

However, this result indicates that the number of people surveyed is less than the sum of the modes. This is not possible since the population surveyed is fixed. Let's recheck our understanding.

First, it's essential to note that the triple intersection (all three modes) is subtracted only once, and then added back because it was subtracted multiple times. Therefore, people who use multiple modes are not overcounted.

Given that we have the surveyed population fixed, the calculation suggests that the number using these three modes exceeds the total, implying an error in either the reported overlaps or counts. Therefore, ensure all given values are correct. If it still results in a higher number than surveyed, only subtracting populations using all three modes would be correct. Please review the initial data if needed.

Conclusion: The given numbers already account for all potential survey participants. Therefore, the population that uses other modes might not exist unless a reporting error is clarified. Assuming correct figures, all travel modes are covered by the provided numbers, leaving no individuals traveling in other ways.

If you need further clarification or have additional details, let me know!