Finding the Fourth Proportional to 2,222.89, 3,067.64 and 1,228.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.89 : 3,067.64 = 1,228.23 : x
2. Step 2: Convert to fraction form
   2,222.89/3,067.64 = 1,228.23/x
3. Step 3: Cross multiply
   2,222.89x = 3,067.64 × 1,228.23
4. Step 4: Simplify right side
   2,222.89x = 3,767,767.10
5. Step 5: Solve for x
   x = 3,767,767.10/2,222.89
6. Step 6: Final answer
   x = 1,694.99