Finding the Fourth Proportional to 1,085.52, 1,626.24 and 868.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.52 : 1,626.24 = 868.56 : x
2. Step 2: Convert to fraction form
   1,085.52/1,626.24 = 868.56/x
3. Step 3: Cross multiply
   1,085.52x = 1,626.24 × 868.56
4. Step 4: Simplify right side
   1,085.52x = 1,412,487.01
5. Step 5: Solve for x
   x = 1,412,487.01/1,085.52
6. Step 6: Final answer
   x = 1,301.21