Finding the Fourth Proportional to 2,736.80, 4,105.92 and 789.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,736.80 : 4,105.92 = 789.16 : x
2. Step 2: Convert to fraction form
   2,736.80/4,105.92 = 789.16/x
3. Step 3: Cross multiply
   2,736.80x = 4,105.92 × 789.16
4. Step 4: Simplify right side
   2,736.80x = 3,240,227.83
5. Step 5: Solve for x
   x = 3,240,227.83/2,736.80
6. Step 6: Final answer
   x = 1,183.95