Finding the Fourth Proportional to 2,263.29, 3,391.28 and 1,223.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,263.29 : 3,391.28 = 1,223.78 : x
2. Step 2: Convert to fraction form
   2,263.29/3,391.28 = 1,223.78/x
3. Step 3: Cross multiply
   2,263.29x = 3,391.28 × 1,223.78
4. Step 4: Simplify right side
   2,263.29x = 4,150,182.72
5. Step 5: Solve for x
   x = 4,150,182.72/2,263.29
6. Step 6: Final answer
   x = 1,833.70