Finding the Fourth Proportional to 2,223.12, 3,067.79 and 1,228.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.12 : 3,067.79 = 1,228.37 : x
2. Step 2: Convert to fraction form
   2,223.12/3,067.79 = 1,228.37/x
3. Step 3: Cross multiply
   2,223.12x = 3,067.79 × 1,228.37
4. Step 4: Simplify right side
   2,223.12x = 3,768,383.89
5. Step 5: Solve for x
   x = 3,768,383.89/2,223.12
6. Step 6: Final answer
   x = 1,695.09