Finding the Fourth Proportional to 2,407.32, 3,608.46 and 1,107.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,407.32 : 3,608.46 = 1,107.72 : x
2. Step 2: Convert to fraction form
   2,407.32/3,608.46 = 1,107.72/x
3. Step 3: Cross multiply
   2,407.32x = 3,608.46 × 1,107.72
4. Step 4: Simplify right side
   2,407.32x = 3,997,163.31
5. Step 5: Solve for x
   x = 3,997,163.31/2,407.32
6. Step 6: Final answer
   x = 1,660.42