Finding the Fourth Proportional to 2,951.50, 4,426.56 and 871.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,951.50 : 4,426.56 = 871.64 : x
2. Step 2: Convert to fraction form
   2,951.50/4,426.56 = 871.64/x
3. Step 3: Cross multiply
   2,951.50x = 4,426.56 × 871.64
4. Step 4: Simplify right side
   2,951.50x = 3,858,366.76
5. Step 5: Solve for x
   x = 3,858,366.76/2,951.50
6. Step 6: Final answer
   x = 1,307.26