Finding the Fourth Proportional to 2,222.93, 3,067.31 and 1,228.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.93 : 3,067.31 = 1,228.25 : x
2. Step 2: Convert to fraction form
   2,222.93/3,067.31 = 1,228.25/x
3. Step 3: Cross multiply
   2,222.93x = 3,067.31 × 1,228.25
4. Step 4: Simplify right side
   2,222.93x = 3,767,413.54
5. Step 5: Solve for x
   x = 3,767,413.54/2,222.93
6. Step 6: Final answer
   x = 1,694.80