Finding the Fourth Proportional to 2,951.42, 4,427.69 and 871.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,951.42 : 4,427.69 = 871.43 : x
2. Step 2: Convert to fraction form
   2,951.42/4,427.69 = 871.43/x
3. Step 3: Cross multiply
   2,951.42x = 4,427.69 × 871.43
4. Step 4: Simplify right side
   2,951.42x = 3,858,395.40
5. Step 5: Solve for x
   x = 3,858,395.40/2,951.42
6. Step 6: Final answer
   x = 1,307.30