Finding the Fourth Proportional to 2,639.26, 3,956.27 and 1,250.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.26 : 3,956.27 = 1,250.15 : x
2. Step 2: Convert to fraction form
   2,639.26/3,956.27 = 1,250.15/x
3. Step 3: Cross multiply
   2,639.26x = 3,956.27 × 1,250.15
4. Step 4: Simplify right side
   2,639.26x = 4,945,930.94
5. Step 5: Solve for x
   x = 4,945,930.94/2,639.26
6. Step 6: Final answer
   x = 1,873.99