Finding the Fourth Proportional to 2,951, 4,426.56 and 871.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,951 : 4,426.56 = 871.28 : x
2. Step 2: Convert to fraction form
   2,951/4,426.56 = 871.28/x
3. Step 3: Cross multiply
   2,951x = 4,426.56 × 871.28
4. Step 4: Simplify right side
   2,951x = 3,856,773.20
5. Step 5: Solve for x
   x = 3,856,773.20/2,951
6. Step 6: Final answer
   x = 1,306.94