Finding the Fourth Proportional to 1,120.52, 1,545.89 and 722.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.52 : 1,545.89 = 722.13 : x
2. Step 2: Convert to fraction form
   1,120.52/1,545.89 = 722.13/x
3. Step 3: Cross multiply
   1,120.52x = 1,545.89 × 722.13
4. Step 4: Simplify right side
   1,120.52x = 1,116,332.83
5. Step 5: Solve for x
   x = 1,116,332.83/1,120.52
6. Step 6: Final answer
   x = 996.27