Finding the Fourth Proportional to 2,517.28, 3,471.54 and 1,666.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,517.28 : 3,471.54 = 1,666.17 : x
2. Step 2: Convert to fraction form
   2,517.28/3,471.54 = 1,666.17/x
3. Step 3: Cross multiply
   2,517.28x = 3,471.54 × 1,666.17
4. Step 4: Simplify right side
   2,517.28x = 5,784,175.80
5. Step 5: Solve for x
   x = 5,784,175.80/2,517.28
6. Step 6: Final answer
   x = 2,297.79