Finding the Fourth Proportional to 3,664.78, 5,498.09 and 1,067.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,664.78 : 5,498.09 = 1,067.72 : x
2. Step 2: Convert to fraction form
   3,664.78/5,498.09 = 1,067.72/x
3. Step 3: Cross multiply
   3,664.78x = 5,498.09 × 1,067.72
4. Step 4: Simplify right side
   3,664.78x = 5,870,408.44
5. Step 5: Solve for x
   x = 5,870,408.44/3,664.78
6. Step 6: Final answer
   x = 1,601.84