Finding the Fourth Proportional to 2,635.43, 3,951.85 and 879.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.43 : 3,951.85 = 879.83 : x
2. Step 2: Convert to fraction form
   2,635.43/3,951.85 = 879.83/x
3. Step 3: Cross multiply
   2,635.43x = 3,951.85 × 879.83
4. Step 4: Simplify right side
   2,635.43x = 3,476,963.87
5. Step 5: Solve for x
   x = 3,476,963.87/2,635.43
6. Step 6: Final answer
   x = 1,319.31