Finding the Fourth Proportional to 1,132.54, 1,562.72 and 712.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.54 : 1,562.72 = 712.16 : x
2. Step 2: Convert to fraction form
   1,132.54/1,562.72 = 712.16/x
3. Step 3: Cross multiply
   1,132.54x = 1,562.72 × 712.16
4. Step 4: Simplify right side
   1,132.54x = 1,112,913.55
5. Step 5: Solve for x
   x = 1,112,913.55/1,132.54
6. Step 6: Final answer
   x = 982.67