Finding the Fourth Proportional to 1,087.29, 1,500.52 and 615.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.29 : 1,500.52 = 615.23 : x
2. Step 2: Convert to fraction form
   1,087.29/1,500.52 = 615.23/x
3. Step 3: Cross multiply
   1,087.29x = 1,500.52 × 615.23
4. Step 4: Simplify right side
   1,087.29x = 923,154.34
5. Step 5: Solve for x
   x = 923,154.34/1,087.29
6. Step 6: Final answer
   x = 849.05