Finding the Fourth Proportional to 1,141.16, 1,708.38 and 868.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.16 : 1,708.38 = 868.36 : x
2. Step 2: Convert to fraction form
   1,141.16/1,708.38 = 868.36/x
3. Step 3: Cross multiply
   1,141.16x = 1,708.38 × 868.36
4. Step 4: Simplify right side
   1,141.16x = 1,483,488.86
5. Step 5: Solve for x
   x = 1,483,488.86/1,141.16
6. Step 6: Final answer
   x = 1,299.98