Finding the Fourth Proportional to 2,080.80, 3,106.19 and 1,928.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.80 : 3,106.19 = 1,928.79 : x
2. Step 2: Convert to fraction form
   2,080.80/3,106.19 = 1,928.79/x
3. Step 3: Cross multiply
   2,080.80x = 3,106.19 × 1,928.79
4. Step 4: Simplify right side
   2,080.80x = 5,991,178.57
5. Step 5: Solve for x
   x = 5,991,178.57/2,080.80
6. Step 6: Final answer
   x = 2,879.27