Finding the Fourth Proportional to 2,610.79, 3,916.24 and 879.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.79 : 3,916.24 = 879.41 : x
2. Step 2: Convert to fraction form
   2,610.79/3,916.24 = 879.41/x
3. Step 3: Cross multiply
   2,610.79x = 3,916.24 × 879.41
4. Step 4: Simplify right side
   2,610.79x = 3,443,980.62
5. Step 5: Solve for x
   x = 3,443,980.62/2,610.79
6. Step 6: Final answer
   x = 1,319.13