Finding the Fourth Proportional to 1,531.33, 2,113.23 and 868.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.33 : 2,113.23 = 868.18 : x
2. Step 2: Convert to fraction form
   1,531.33/2,113.23 = 868.18/x
3. Step 3: Cross multiply
   1,531.33x = 2,113.23 × 868.18
4. Step 4: Simplify right side
   1,531.33x = 1,834,663.60
5. Step 5: Solve for x
   x = 1,834,663.60/1,531.33
6. Step 6: Final answer
   x = 1,198.09