Finding the Fourth Proportional to 2,240.56, 3,089.46 and 1,640.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,240.56 : 3,089.46 = 1,640.32 : x
2. Step 2: Convert to fraction form
   2,240.56/3,089.46 = 1,640.32/x
3. Step 3: Cross multiply
   2,240.56x = 3,089.46 × 1,640.32
4. Step 4: Simplify right side
   2,240.56x = 5,067,703.03
5. Step 5: Solve for x
   x = 5,067,703.03/2,240.56
6. Step 6: Final answer
   x = 2,261.80