Finding the Fourth Proportional to 2,255.02, 3,381.72 and 868.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.02 : 3,381.72 = 868.78 : x
2. Step 2: Convert to fraction form
   2,255.02/3,381.72 = 868.78/x
3. Step 3: Cross multiply
   2,255.02x = 3,381.72 × 868.78
4. Step 4: Simplify right side
   2,255.02x = 2,937,970.70
5. Step 5: Solve for x
   x = 2,937,970.70/2,255.02
6. Step 6: Final answer
   x = 1,302.86