Finding the Fourth Proportional to 2,639.97, 3,956.85 and 1,469.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.97 : 3,956.85 = 1,469.43 : x
2. Step 2: Convert to fraction form
   2,639.97/3,956.85 = 1,469.43/x
3. Step 3: Cross multiply
   2,639.97x = 3,956.85 × 1,469.43
4. Step 4: Simplify right side
   2,639.97x = 5,814,314.10
5. Step 5: Solve for x
   x = 5,814,314.10/2,639.97
6. Step 6: Final answer
   x = 2,202.42