Finding the Fourth Proportional to 2,441.86, 3,661.56 and 979.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,441.86 : 3,661.56 = 979.80 : x
2. Step 2: Convert to fraction form
   2,441.86/3,661.56 = 979.80/x
3. Step 3: Cross multiply
   2,441.86x = 3,661.56 × 979.80
4. Step 4: Simplify right side
   2,441.86x = 3,587,596.49
5. Step 5: Solve for x
   x = 3,587,596.49/2,441.86
6. Step 6: Final answer
   x = 1,469.21