Finding the Fourth Proportional to 2,003.28, 3,005.56 and 704.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.28 : 3,005.56 = 704.72 : x
2. Step 2: Convert to fraction form
   2,003.28/3,005.56 = 704.72/x
3. Step 3: Cross multiply
   2,003.28x = 3,005.56 × 704.72
4. Step 4: Simplify right side
   2,003.28x = 2,118,078.24
5. Step 5: Solve for x
   x = 2,118,078.24/2,003.28
6. Step 6: Final answer
   x = 1,057.31