Finding the Fourth Proportional to 2,222.70, 3,067.56 and 1,338.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.70 : 3,067.56 = 1,338.78 : x
2. Step 2: Convert to fraction form
   2,222.70/3,067.56 = 1,338.78/x
3. Step 3: Cross multiply
   2,222.70x = 3,067.56 × 1,338.78
4. Step 4: Simplify right side
   2,222.70x = 4,106,787.98
5. Step 5: Solve for x
   x = 4,106,787.98/2,222.70
6. Step 6: Final answer
   x = 1,847.66