Finding the Fourth Proportional to 1,567.17, 2,162.61 and 868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,567.17 : 2,162.61 = 868.50 : x
2. Step 2: Convert to fraction form
   1,567.17/2,162.61 = 868.50/x
3. Step 3: Cross multiply
   1,567.17x = 2,162.61 × 868.50
4. Step 4: Simplify right side
   1,567.17x = 1,878,226.79
5. Step 5: Solve for x
   x = 1,878,226.79/1,567.17
6. Step 6: Final answer
   x = 1,198.48