Finding the Fourth Proportional to 1,082.47, 1,493.85 and 616.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.47 : 1,493.85 = 616.72 : x
2. Step 2: Convert to fraction form
   1,082.47/1,493.85 = 616.72/x
3. Step 3: Cross multiply
   1,082.47x = 1,493.85 × 616.72
4. Step 4: Simplify right side
   1,082.47x = 921,287.17
5. Step 5: Solve for x
   x = 921,287.17/1,082.47
6. Step 6: Final answer
   x = 851.10