Finding the Fourth Proportional to 2,952.75, 4,429.71 and 872.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,952.75 : 4,429.71 = 872.79 : x
2. Step 2: Convert to fraction form
   2,952.75/4,429.71 = 872.79/x
3. Step 3: Cross multiply
   2,952.75x = 4,429.71 × 872.79
4. Step 4: Simplify right side
   2,952.75x = 3,866,206.59
5. Step 5: Solve for x
   x = 3,866,206.59/2,952.75
6. Step 6: Final answer
   x = 1,309.36