Finding the Fourth Proportional to 2,282.78, 3,150.50 and 1,288.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,282.78 : 3,150.50 = 1,288.23 : x
2. Step 2: Convert to fraction form
   2,282.78/3,150.50 = 1,288.23/x
3. Step 3: Cross multiply
   2,282.78x = 3,150.50 × 1,288.23
4. Step 4: Simplify right side
   2,282.78x = 4,058,562.17
5. Step 5: Solve for x
   x = 4,058,562.17/2,282.78
6. Step 6: Final answer
   x = 1,777.91