Finding the Fourth Proportional to 1,025.62, 1,540.48 and 615.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025.62 : 1,540.48 = 615.52 : x
2. Step 2: Convert to fraction form
   1,025.62/1,540.48 = 615.52/x
3. Step 3: Cross multiply
   1,025.62x = 1,540.48 × 615.52
4. Step 4: Simplify right side
   1,025.62x = 948,196.25
5. Step 5: Solve for x
   x = 948,196.25/1,025.62
6. Step 6: Final answer
   x = 924.51