Finding the Fourth Proportional to 2,826.15, 4,243.47 and 2,439.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.15 : 4,243.47 = 2,439.17 : x
2. Step 2: Convert to fraction form
   2,826.15/4,243.47 = 2,439.17/x
3. Step 3: Cross multiply
   2,826.15x = 4,243.47 × 2,439.17
4. Step 4: Simplify right side
   2,826.15x = 10,350,544.72
5. Step 5: Solve for x
   x = 10,350,544.72/2,826.15
6. Step 6: Final answer
   x = 3,662.42