Finding the Fourth Proportional to 2,951.22, 4,426.76 and 871.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,951.22 : 4,426.76 = 871.17 : x
2. Step 2: Convert to fraction form
   2,951.22/4,426.76 = 871.17/x
3. Step 3: Cross multiply
   2,951.22x = 4,426.76 × 871.17
4. Step 4: Simplify right side
   2,951.22x = 3,856,456.15
5. Step 5: Solve for x
   x = 3,856,456.15/2,951.22
6. Step 6: Final answer
   x = 1,306.73