Finding the Fourth Proportional to 2,223.02, 3,067.61 and 1,228.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.02 : 3,067.61 = 1,228.20 : x
2. Step 2: Convert to fraction form
   2,223.02/3,067.61 = 1,228.20/x
3. Step 3: Cross multiply
   2,223.02x = 3,067.61 × 1,228.20
4. Step 4: Simplify right side
   2,223.02x = 3,767,632.46
5. Step 5: Solve for x
   x = 3,767,632.46/2,223.02
6. Step 6: Final answer
   x = 1,694.83