Finding the Fourth Proportional to 2,727.56, 4,091.51 and 779.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,727.56 : 4,091.51 = 779.92 : x
2. Step 2: Convert to fraction form
   2,727.56/4,091.51 = 779.92/x
3. Step 3: Cross multiply
   2,727.56x = 4,091.51 × 779.92
4. Step 4: Simplify right side
   2,727.56x = 3,191,042.20
5. Step 5: Solve for x
   x = 3,191,042.20/2,727.56
6. Step 6: Final answer
   x = 1,169.92