Finding the Fourth Proportional to 2,222.67, 3,067.56 and 1,278.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.67 : 3,067.56 = 1,278.68 : x
2. Step 2: Convert to fraction form
   2,222.67/3,067.56 = 1,278.68/x
3. Step 3: Cross multiply
   2,222.67x = 3,067.56 × 1,278.68
4. Step 4: Simplify right side
   2,222.67x = 3,922,421.23
5. Step 5: Solve for x
   x = 3,922,421.23/2,222.67
6. Step 6: Final answer
   x = 1,764.73