Finding the Fourth Proportional to 2,855.82, 3,947.68 and 2,739.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,855.82 : 3,947.68 = 2,739.54 : x
2. Step 2: Convert to fraction form
   2,855.82/3,947.68 = 2,739.54/x
3. Step 3: Cross multiply
   2,855.82x = 3,947.68 × 2,739.54
4. Step 4: Simplify right side
   2,855.82x = 10,814,827.27
5. Step 5: Solve for x
   x = 10,814,827.27/2,855.82
6. Step 6: Final answer
   x = 3,786.94