Finding the Fourth Proportional to 1,562.46, 2,156.27 and 863.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.46 : 2,156.27 = 863.85 : x
2. Step 2: Convert to fraction form
   1,562.46/2,156.27 = 863.85/x
3. Step 3: Cross multiply
   1,562.46x = 2,156.27 × 863.85
4. Step 4: Simplify right side
   1,562.46x = 1,862,689.52
5. Step 5: Solve for x
   x = 1,862,689.52/1,562.46
6. Step 6: Final answer
   x = 1,192.15