Finding the Fourth Proportional to 2,167.17, 3,251.15 and 868.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167.17 : 3,251.15 = 868.74 : x
2. Step 2: Convert to fraction form
   2,167.17/3,251.15 = 868.74/x
3. Step 3: Cross multiply
   2,167.17x = 3,251.15 × 868.74
4. Step 4: Simplify right side
   2,167.17x = 2,824,404.05
5. Step 5: Solve for x
   x = 2,824,404.05/2,167.17
6. Step 6: Final answer
   x = 1,303.27