Finding the Fourth Proportional to 2,282.71, 3,150.14 and 1,288.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,282.71 : 3,150.14 = 1,288.20 : x
2. Step 2: Convert to fraction form
   2,282.71/3,150.14 = 1,288.20/x
3. Step 3: Cross multiply
   2,282.71x = 3,150.14 × 1,288.20
4. Step 4: Simplify right side
   2,282.71x = 4,058,010.35
5. Step 5: Solve for x
   x = 4,058,010.35/2,282.71
6. Step 6: Final answer
   x = 1,777.72