Finding the Fourth Proportional to 2,952.07, 4,428.73 and 871.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,952.07 : 4,428.73 = 871.91 : x
2. Step 2: Convert to fraction form
   2,952.07/4,428.73 = 871.91/x
3. Step 3: Cross multiply
   2,952.07x = 4,428.73 × 871.91
4. Step 4: Simplify right side
   2,952.07x = 3,861,469.54
5. Step 5: Solve for x
   x = 3,861,469.54/2,952.07
6. Step 6: Final answer
   x = 1,308.05