Finding the Fourth Proportional to 1,567.16, 2,162.72 and 868.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,567.16 : 2,162.72 = 868.53 : x
2. Step 2: Convert to fraction form
   1,567.16/2,162.72 = 868.53/x
3. Step 3: Cross multiply
   1,567.16x = 2,162.72 × 868.53
4. Step 4: Simplify right side
   1,567.16x = 1,878,397.48
5. Step 5: Solve for x
   x = 1,878,397.48/1,567.16
6. Step 6: Final answer
   x = 1,198.60