Finding the Fourth Proportional to 2,222.87, 3,067.62 and 1,228.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.87 : 3,067.62 = 1,228.15 : x
2. Step 2: Convert to fraction form
   2,222.87/3,067.62 = 1,228.15/x
3. Step 3: Cross multiply
   2,222.87x = 3,067.62 × 1,228.15
4. Step 4: Simplify right side
   2,222.87x = 3,767,497.50
5. Step 5: Solve for x
   x = 3,767,497.50/2,222.87
6. Step 6: Final answer
   x = 1,694.88