Finding the Fourth Proportional to 2,282.18, 3,149.58 and 1,287.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,282.18 : 3,149.58 = 1,287.39 : x
2. Step 2: Convert to fraction form
   2,282.18/3,149.58 = 1,287.39/x
3. Step 3: Cross multiply
   2,282.18x = 3,149.58 × 1,287.39
4. Step 4: Simplify right side
   2,282.18x = 4,054,754.43
5. Step 5: Solve for x
   x = 4,054,754.43/2,282.18
6. Step 6: Final answer
   x = 1,776.71