Finding the Fourth Proportional to 3,738.72, 5,608.56 and 1,272.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,738.72 : 5,608.56 = 1,272.88 : x
2. Step 2: Convert to fraction form
   3,738.72/5,608.56 = 1,272.88/x
3. Step 3: Cross multiply
   3,738.72x = 5,608.56 × 1,272.88
4. Step 4: Simplify right side
   3,738.72x = 7,139,023.85
5. Step 5: Solve for x
   x = 7,139,023.85/3,738.72
6. Step 6: Final answer
   x = 1,909.48