Finding the Fourth Proportional to 2,282.22, 3,149.71 and 1,287.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,282.22 : 3,149.71 = 1,287.74 : x
2. Step 2: Convert to fraction form
   2,282.22/3,149.71 = 1,287.74/x
3. Step 3: Cross multiply
   2,282.22x = 3,149.71 × 1,287.74
4. Step 4: Simplify right side
   2,282.22x = 4,056,012.21
5. Step 5: Solve for x
   x = 4,056,012.21/2,282.22
6. Step 6: Final answer
   x = 1,777.22