Finding the Fourth Proportional to 2,612.09, 3,920.33 and 2,447.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.09 : 3,920.33 = 2,447.89 : x
2. Step 2: Convert to fraction form
   2,612.09/3,920.33 = 2,447.89/x
3. Step 3: Cross multiply
   2,612.09x = 3,920.33 × 2,447.89
4. Step 4: Simplify right side
   2,612.09x = 9,596,524.36
5. Step 5: Solve for x
   x = 9,596,524.36/2,612.09
6. Step 6: Final answer
   x = 3,673.88