Finding the Fourth Proportional to 1,545.15, 2,132.31 and 863.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,545.15 : 2,132.31 = 863.82 : x
2. Step 2: Convert to fraction form
   1,545.15/2,132.31 = 863.82/x
3. Step 3: Cross multiply
   1,545.15x = 2,132.31 × 863.82
4. Step 4: Simplify right side
   1,545.15x = 1,841,932.02
5. Step 5: Solve for x
   x = 1,841,932.02/1,545.15
6. Step 6: Final answer
   x = 1,192.07