Finding the Fourth Proportional to 1,531.89, 2,114.06 and 868.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.89 : 2,114.06 = 868.68 : x
2. Step 2: Convert to fraction form
   1,531.89/2,114.06 = 868.68/x
3. Step 3: Cross multiply
   1,531.89x = 2,114.06 × 868.68
4. Step 4: Simplify right side
   1,531.89x = 1,836,437.30
5. Step 5: Solve for x
   x = 1,836,437.30/1,531.89
6. Step 6: Final answer
   x = 1,198.80