Finding the Fourth Proportional to 1,142.33, 1,710.32 and 863.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.33 : 1,710.32 = 863.82 : x
2. Step 2: Convert to fraction form
   1,142.33/1,710.32 = 863.82/x
3. Step 3: Cross multiply
   1,142.33x = 1,710.32 × 863.82
4. Step 4: Simplify right side
   1,142.33x = 1,477,404.30
5. Step 5: Solve for x
   x = 1,477,404.30/1,142.33
6. Step 6: Final answer
   x = 1,293.33