Finding the Fourth Proportional to 3,648.37, 5,472.72 and 1,338.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,648.37 : 5,472.72 = 1,338.61 : x
2. Step 2: Convert to fraction form
   3,648.37/5,472.72 = 1,338.61/x
3. Step 3: Cross multiply
   3,648.37x = 5,472.72 × 1,338.61
4. Step 4: Simplify right side
   3,648.37x = 7,325,831.03
5. Step 5: Solve for x
   x = 7,325,831.03/3,648.37
6. Step 6: Final answer
   x = 2,007.97