Finding the Fourth Proportional to 2,738.88, 4,107.72 and 790.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,738.88 : 4,107.72 = 790.56 : x
2. Step 2: Convert to fraction form
   2,738.88/4,107.72 = 790.56/x
3. Step 3: Cross multiply
   2,738.88x = 4,107.72 × 790.56
4. Step 4: Simplify right side
   2,738.88x = 3,247,399.12
5. Step 5: Solve for x
   x = 3,247,399.12/2,738.88
6. Step 6: Final answer
   x = 1,185.67