Finding the Fourth Proportional to 2,399.49, 3,309.86 and 1,653.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.49 : 3,309.86 = 1,653.41 : x
2. Step 2: Convert to fraction form
   2,399.49/3,309.86 = 1,653.41/x
3. Step 3: Cross multiply
   2,399.49x = 3,309.86 × 1,653.41
4. Step 4: Simplify right side
   2,399.49x = 5,472,568.03
5. Step 5: Solve for x
   x = 5,472,568.03/2,399.49
6. Step 6: Final answer
   x = 2,280.72