Finding the Fourth Proportional to 2,633.33, 3,949.56 and 879.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,633.33 : 3,949.56 = 879.55 : x
2. Step 2: Convert to fraction form
   2,633.33/3,949.56 = 879.55/x
3. Step 3: Cross multiply
   2,633.33x = 3,949.56 × 879.55
4. Step 4: Simplify right side
   2,633.33x = 3,473,825.62
5. Step 5: Solve for x
   x = 3,473,825.62/2,633.33
6. Step 6: Final answer
   x = 1,319.17