Finding the Fourth Proportional to 1,120.29, 1,545.96 and 648.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.29 : 1,545.96 = 648.17 : x
2. Step 2: Convert to fraction form
   1,120.29/1,545.96 = 648.17/x
3. Step 3: Cross multiply
   1,120.29x = 1,545.96 × 648.17
4. Step 4: Simplify right side
   1,120.29x = 1,002,044.89
5. Step 5: Solve for x
   x = 1,002,044.89/1,120.29
6. Step 6: Final answer
   x = 894.45