Finding the Fourth Proportional to 2,223.20, 3,068.04 and 1,228.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.20 : 3,068.04 = 1,228.48 : x
2. Step 2: Convert to fraction form
   2,223.20/3,068.04 = 1,228.48/x
3. Step 3: Cross multiply
   2,223.20x = 3,068.04 × 1,228.48
4. Step 4: Simplify right side
   2,223.20x = 3,769,025.78
5. Step 5: Solve for x
   x = 3,769,025.78/2,223.20
6. Step 6: Final answer
   x = 1,695.32