Finding the Fourth Proportional to 2,282.68, 3,149.94 and 1,287.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,282.68 : 3,149.94 = 1,287.78 : x
2. Step 2: Convert to fraction form
   2,282.68/3,149.94 = 1,287.78/x
3. Step 3: Cross multiply
   2,282.68x = 3,149.94 × 1,287.78
4. Step 4: Simplify right side
   2,282.68x = 4,056,429.73
5. Step 5: Solve for x
   x = 4,056,429.73/2,282.68
6. Step 6: Final answer
   x = 1,777.05