Finding the Fourth Proportional to 2,222.98, 3,067.70 and 1,228.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.98 : 3,067.70 = 1,228.25 : x
2. Step 2: Convert to fraction form
   2,222.98/3,067.70 = 1,228.25/x
3. Step 3: Cross multiply
   2,222.98x = 3,067.70 × 1,228.25
4. Step 4: Simplify right side
   2,222.98x = 3,767,902.53
5. Step 5: Solve for x
   x = 3,767,902.53/2,222.98
6. Step 6: Final answer
   x = 1,694.98