Finding the Fourth Proportional to 2,738.30, 3,778.50 and 1,559.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,738.30 : 3,778.50 = 1,559.20 : x
2. Step 2: Convert to fraction form
   2,738.30/3,778.50 = 1,559.20/x
3. Step 3: Cross multiply
   2,738.30x = 3,778.50 × 1,559.20
4. Step 4: Simplify right side
   2,738.30x = 5,891,437.20
5. Step 5: Solve for x
   x = 5,891,437.20/2,738.30
6. Step 6: Final answer
   x = 2,151.49