Finding the Fourth Proportional to 2,339.61, 3,507.89 and 877.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.61 : 3,507.89 = 877.92 : x
2. Step 2: Convert to fraction form
   2,339.61/3,507.89 = 877.92/x
3. Step 3: Cross multiply
   2,339.61x = 3,507.89 × 877.92
4. Step 4: Simplify right side
   2,339.61x = 3,079,642.40
5. Step 5: Solve for x
   x = 3,079,642.40/2,339.61
6. Step 6: Final answer
   x = 1,316.31