Finding the Fourth Proportional to 1,124.60, 1,552.56 and 863.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.60 : 1,552.56 = 863.12 : x
2. Step 2: Convert to fraction form
   1,124.60/1,552.56 = 863.12/x
3. Step 3: Cross multiply
   1,124.60x = 1,552.56 × 863.12
4. Step 4: Simplify right side
   1,124.60x = 1,340,045.59
5. Step 5: Solve for x
   x = 1,340,045.59/1,124.60
6. Step 6: Final answer
   x = 1,191.58