Finding the Fourth Proportional to 2,222.79, 3,067.46 and 1,228.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.79 : 3,067.46 = 1,228.07 : x
2. Step 2: Convert to fraction form
   2,222.79/3,067.46 = 1,228.07/x
3. Step 3: Cross multiply
   2,222.79x = 3,067.46 × 1,228.07
4. Step 4: Simplify right side
   2,222.79x = 3,767,055.60
5. Step 5: Solve for x
   x = 3,767,055.60/2,222.79
6. Step 6: Final answer
   x = 1,694.74