Finding the Fourth Proportional to 2,862.91, 4,288.59 and 2,399.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,862.91 : 4,288.59 = 2,399.39 : x
2. Step 2: Convert to fraction form
   2,862.91/4,288.59 = 2,399.39/x
3. Step 3: Cross multiply
   2,862.91x = 4,288.59 × 2,399.39
4. Step 4: Simplify right side
   2,862.91x = 10,289,999.96
5. Step 5: Solve for x
   x = 10,289,999.96/2,862.91
6. Step 6: Final answer
   x = 3,594.25