Finding the Fourth Proportional to 1,567.38, 2,162.79 and 868.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,567.38 : 2,162.79 = 868.89 : x
2. Step 2: Convert to fraction form
   1,567.38/2,162.79 = 868.89/x
3. Step 3: Cross multiply
   1,567.38x = 2,162.79 × 868.89
4. Step 4: Simplify right side
   1,567.38x = 1,879,226.60
5. Step 5: Solve for x
   x = 1,879,226.60/1,567.38
6. Step 6: Final answer
   x = 1,198.96