Finding the Fourth Proportional to 1,552.38, 2,329.37 and 687.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.38 : 2,329.37 = 687.30 : x
2. Step 2: Convert to fraction form
   1,552.38/2,329.37 = 687.30/x
3. Step 3: Cross multiply
   1,552.38x = 2,329.37 × 687.30
4. Step 4: Simplify right side
   1,552.38x = 1,600,976.00
5. Step 5: Solve for x
   x = 1,600,976.00/1,552.38
6. Step 6: Final answer
   x = 1,031.30