Finding the Fourth Proportional to 1,531.34, 2,113.12 and 868.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.34 : 2,113.12 = 868.17 : x
2. Step 2: Convert to fraction form
   1,531.34/2,113.12 = 868.17/x
3. Step 3: Cross multiply
   1,531.34x = 2,113.12 × 868.17
4. Step 4: Simplify right side
   1,531.34x = 1,834,544.51
5. Step 5: Solve for x
   x = 1,834,544.51/1,531.34
6. Step 6: Final answer
   x = 1,198.00