Finding the Fourth Proportional to 1,940.71, 2,906.50 and 1,687.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.71 : 2,906.50 = 1,687.30 : x
2. Step 2: Convert to fraction form
   1,940.71/2,906.50 = 1,687.30/x
3. Step 3: Cross multiply
   1,940.71x = 2,906.50 × 1,687.30
4. Step 4: Simplify right side
   1,940.71x = 4,904,129.01
5. Step 5: Solve for x
   x = 4,904,129.01/1,940.71
6. Step 6: Final answer
   x = 2,526.98