Finding the Fourth Proportional to 2,168.76, 3,250.71 and 868.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.76 : 3,250.71 = 868.71 : x
2. Step 2: Convert to fraction form
   2,168.76/3,250.71 = 868.71/x
3. Step 3: Cross multiply
   2,168.76x = 3,250.71 × 868.71
4. Step 4: Simplify right side
   2,168.76x = 2,823,924.28
5. Step 5: Solve for x
   x = 2,823,924.28/2,168.76
6. Step 6: Final answer
   x = 1,302.09