Finding the Fourth Proportional to 1,087.44, 1,500.72 and 615.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.44 : 1,500.72 = 615.16 : x
2. Step 2: Convert to fraction form
   1,087.44/1,500.72 = 615.16/x
3. Step 3: Cross multiply
   1,087.44x = 1,500.72 × 615.16
4. Step 4: Simplify right side
   1,087.44x = 923,182.92
5. Step 5: Solve for x
   x = 923,182.92/1,087.44
6. Step 6: Final answer
   x = 848.95