Finding the Fourth Proportional to 2,738.22, 4,105.17 and 1,438.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,738.22 : 4,105.17 = 1,438.98 : x
2. Step 2: Convert to fraction form
   2,738.22/4,105.17 = 1,438.98/x
3. Step 3: Cross multiply
   2,738.22x = 4,105.17 × 1,438.98
4. Step 4: Simplify right side
   2,738.22x = 5,907,257.53
5. Step 5: Solve for x
   x = 5,907,257.53/2,738.22
6. Step 6: Final answer
   x = 2,157.33