Finding the Fourth Proportional to 1,567.40, 2,162.82 and 868.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,567.40 : 2,162.82 = 868.76 : x
2. Step 2: Convert to fraction form
   1,567.40/2,162.82 = 868.76/x
3. Step 3: Cross multiply
   1,567.40x = 2,162.82 × 868.76
4. Step 4: Simplify right side
   1,567.40x = 1,878,971.50
5. Step 5: Solve for x
   x = 1,878,971.50/1,567.40
6. Step 6: Final answer
   x = 1,198.78