Finding the Fourth Proportional to 1,143.33, 1,711.81 and 864.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.33 : 1,711.81 = 864.82 : x
2. Step 2: Convert to fraction form
   1,143.33/1,711.81 = 864.82/x
3. Step 3: Cross multiply
   1,143.33x = 1,711.81 × 864.82
4. Step 4: Simplify right side
   1,143.33x = 1,480,407.52
5. Step 5: Solve for x
   x = 1,480,407.52/1,143.33
6. Step 6: Final answer
   x = 1,294.82