Finding the Fourth Proportional to 2,523.31, 3,785.43 and 879.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,523.31 : 3,785.43 = 879.82 : x
2. Step 2: Convert to fraction form
   2,523.31/3,785.43 = 879.82/x
3. Step 3: Cross multiply
   2,523.31x = 3,785.43 × 879.82
4. Step 4: Simplify right side
   2,523.31x = 3,330,490.86
5. Step 5: Solve for x
   x = 3,330,490.86/2,523.31
6. Step 6: Final answer
   x = 1,319.89