Finding the Fourth Proportional to 2,339.92, 3,510.42 and 879.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.92 : 3,510.42 = 879.76 : x
2. Step 2: Convert to fraction form
   2,339.92/3,510.42 = 879.76/x
3. Step 3: Cross multiply
   2,339.92x = 3,510.42 × 879.76
4. Step 4: Simplify right side
   2,339.92x = 3,088,327.10
5. Step 5: Solve for x
   x = 3,088,327.10/2,339.92
6. Step 6: Final answer
   x = 1,319.84