Finding the Fourth Proportional to 1,531.49, 2,113.83 and 868.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.49 : 2,113.83 = 868.73 : x
2. Step 2: Convert to fraction form
   1,531.49/2,113.83 = 868.73/x
3. Step 3: Cross multiply
   1,531.49x = 2,113.83 × 868.73
4. Step 4: Simplify right side
   1,531.49x = 1,836,347.54
5. Step 5: Solve for x
   x = 1,836,347.54/1,531.49
6. Step 6: Final answer
   x = 1,199.06