Finding the Fourth Proportional to 2,998.89, 4,139.71 and 1,879.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,998.89 : 4,139.71 = 1,879.57 : x
2. Step 2: Convert to fraction form
   2,998.89/4,139.71 = 1,879.57/x
3. Step 3: Cross multiply
   2,998.89x = 4,139.71 × 1,879.57
4. Step 4: Simplify right side
   2,998.89x = 7,780,874.72
5. Step 5: Solve for x
   x = 7,780,874.72/2,998.89
6. Step 6: Final answer
   x = 2,594.58