Finding the Fourth Proportional to 3,640.28, 5,022.61 and 2,459.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,640.28 : 5,022.61 = 2,459.30 : x
2. Step 2: Convert to fraction form
   3,640.28/5,022.61 = 2,459.30/x
3. Step 3: Cross multiply
   3,640.28x = 5,022.61 × 2,459.30
4. Step 4: Simplify right side
   3,640.28x = 12,352,073.51
5. Step 5: Solve for x
   x = 12,352,073.51/3,640.28
6. Step 6: Final answer
   x = 3,393.17