Finding the Fourth Proportional to 2,863.72, 4,288.32 and 2,400.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.72 : 4,288.32 = 2,400.28 : x
2. Step 2: Convert to fraction form
   2,863.72/4,288.32 = 2,400.28/x
3. Step 3: Cross multiply
   2,863.72x = 4,288.32 × 2,400.28
4. Step 4: Simplify right side
   2,863.72x = 10,293,168.73
5. Step 5: Solve for x
   x = 10,293,168.73/2,863.72
6. Step 6: Final answer
   x = 3,594.33