Finding the Fourth Proportional to 2,738.52, 4,107.18 and 790.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,738.52 : 4,107.18 = 790.30 : x
2. Step 2: Convert to fraction form
   2,738.52/4,107.18 = 790.30/x
3. Step 3: Cross multiply
   2,738.52x = 4,107.18 × 790.30
4. Step 4: Simplify right side
   2,738.52x = 3,245,904.35
5. Step 5: Solve for x
   x = 3,245,904.35/2,738.52
6. Step 6: Final answer
   x = 1,185.28