Finding the Fourth Proportional to 2,331.52, 3,496.72 and 687.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,331.52 : 3,496.72 = 687.62 : x
2. Step 2: Convert to fraction form
   2,331.52/3,496.72 = 687.62/x
3. Step 3: Cross multiply
   2,331.52x = 3,496.72 × 687.62
4. Step 4: Simplify right side
   2,331.52x = 2,404,414.61
5. Step 5: Solve for x
   x = 2,404,414.61/2,331.52
6. Step 6: Final answer
   x = 1,031.26