Finding the Fourth Proportional to 2,222.96, 3,067.69 and 1,278.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.96 : 3,067.69 = 1,278.81 : x
2. Step 2: Convert to fraction form
   2,222.96/3,067.69 = 1,278.81/x
3. Step 3: Cross multiply
   2,222.96x = 3,067.69 × 1,278.81
4. Step 4: Simplify right side
   2,222.96x = 3,922,992.65
5. Step 5: Solve for x
   x = 3,922,992.65/2,222.96
6. Step 6: Final answer
   x = 1,764.76