Finding the Fourth Proportional to 2,434.46, 3,359.32 and 1,439.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,434.46 : 3,359.32 = 1,439.72 : x
2. Step 2: Convert to fraction form
   2,434.46/3,359.32 = 1,439.72/x
3. Step 3: Cross multiply
   2,434.46x = 3,359.32 × 1,439.72
4. Step 4: Simplify right side
   2,434.46x = 4,836,480.19
5. Step 5: Solve for x
   x = 4,836,480.19/2,434.46
6. Step 6: Final answer
   x = 1,986.67