Finding the Fourth Proportional to 2,601.72, 3,589.92 and 1,607.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.72 : 3,589.92 = 1,607.31 : x
2. Step 2: Convert to fraction form
   2,601.72/3,589.92 = 1,607.31/x
3. Step 3: Cross multiply
   2,601.72x = 3,589.92 × 1,607.31
4. Step 4: Simplify right side
   2,601.72x = 5,770,114.32
5. Step 5: Solve for x
   x = 5,770,114.32/2,601.72
6. Step 6: Final answer
   x = 2,217.81