Finding the Fourth Proportional to 1,132.87, 1,562.69 and 712.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.87 : 1,562.69 = 712.55 : x
2. Step 2: Convert to fraction form
   1,132.87/1,562.69 = 712.55/x
3. Step 3: Cross multiply
   1,132.87x = 1,562.69 × 712.55
4. Step 4: Simplify right side
   1,132.87x = 1,113,494.76
5. Step 5: Solve for x
   x = 1,113,494.76/1,132.87
6. Step 6: Final answer
   x = 982.90