Finding the Fourth Proportional to 2,727.96, 4,091.55 and 878.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,727.96 : 4,091.55 = 878.83 : x
2. Step 2: Convert to fraction form
   2,727.96/4,091.55 = 878.83/x
3. Step 3: Cross multiply
   2,727.96x = 4,091.55 × 878.83
4. Step 4: Simplify right side
   2,727.96x = 3,595,786.38
5. Step 5: Solve for x
   x = 3,595,786.38/2,727.96
6. Step 6: Final answer
   x = 1,318.12