Finding the Fourth Proportional to 3,665.31, 5,497.32 and 1,067.64

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.31 : 5,497.32 = 1,067.64 : x
2. Step 2: Convert to fraction form
   3,665.31/5,497.32 = 1,067.64/x
3. Step 3: Cross multiply
   3,665.31x = 5,497.32 × 1,067.64
4. Step 4: Simplify right side
   3,665.31x = 5,869,158.72
5. Step 5: Solve for x
   x = 5,869,158.72/3,665.31
6. Step 6: Final answer
   x = 1,601.27