Finding the Fourth Proportional to 2,281.83, 3,149.04 and 1,287.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,281.83 : 3,149.04 = 1,287.15 : x
2. Step 2: Convert to fraction form
   2,281.83/3,149.04 = 1,287.15/x
3. Step 3: Cross multiply
   2,281.83x = 3,149.04 × 1,287.15
4. Step 4: Simplify right side
   2,281.83x = 4,053,286.84
5. Step 5: Solve for x
   x = 4,053,286.84/2,281.83
6. Step 6: Final answer
   x = 1,776.33