Finding the Fourth Proportional to 2,080.80, 2,867.56 and 1,490.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.80 : 2,867.56 = 1,490.31 : x
2. Step 2: Convert to fraction form
   2,080.80/2,867.56 = 1,490.31/x
3. Step 3: Cross multiply
   2,080.80x = 2,867.56 × 1,490.31
4. Step 4: Simplify right side
   2,080.80x = 4,273,565.96
5. Step 5: Solve for x
   x = 4,273,565.96/2,080.80
6. Step 6: Final answer
   x = 2,053.81