Finding the Fourth Proportional to 2,879.16, 4,315.33 and 1,647.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,879.16 : 4,315.33 = 1,647.42 : x
2. Step 2: Convert to fraction form
   2,879.16/4,315.33 = 1,647.42/x
3. Step 3: Cross multiply
   2,879.16x = 4,315.33 × 1,647.42
4. Step 4: Simplify right side
   2,879.16x = 7,109,160.95
5. Step 5: Solve for x
   x = 7,109,160.95/2,879.16
6. Step 6: Final answer
   x = 2,469.18