Finding the Fourth Proportional to 2,811.27, 3,879.57 and 1,927.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,811.27 : 3,879.57 = 1,927.37 : x
2. Step 2: Convert to fraction form
   2,811.27/3,879.57 = 1,927.37/x
3. Step 3: Cross multiply
   2,811.27x = 3,879.57 × 1,927.37
4. Step 4: Simplify right side
   2,811.27x = 7,477,347.43
5. Step 5: Solve for x
   x = 7,477,347.43/2,811.27
6. Step 6: Final answer
   x = 2,659.78