Finding the Fourth Proportional to 2,341.20, 3,510.84 and 879.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,341.20 : 3,510.84 = 879.57 : x
2. Step 2: Convert to fraction form
   2,341.20/3,510.84 = 879.57/x
3. Step 3: Cross multiply
   2,341.20x = 3,510.84 × 879.57
4. Step 4: Simplify right side
   2,341.20x = 3,088,029.54
5. Step 5: Solve for x
   x = 3,088,029.54/2,341.20
6. Step 6: Final answer
   x = 1,318.99