Finding the Fourth Proportional to 2,282.34, 3,149.62 and 1,287.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,282.34 : 3,149.62 = 1,287.60 : x
2. Step 2: Convert to fraction form
   2,282.34/3,149.62 = 1,287.60/x
3. Step 3: Cross multiply
   2,282.34x = 3,149.62 × 1,287.60
4. Step 4: Simplify right side
   2,282.34x = 4,055,441.11
5. Step 5: Solve for x
   x = 4,055,441.11/2,282.34
6. Step 6: Final answer
   x = 1,776.88