Finding the Fourth Proportional to 2,013.52, 3,020.72 and 1,089.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.52 : 3,020.72 = 1,089.04 : x
2. Step 2: Convert to fraction form
   2,013.52/3,020.72 = 1,089.04/x
3. Step 3: Cross multiply
   2,013.52x = 3,020.72 × 1,089.04
4. Step 4: Simplify right side
   2,013.52x = 3,289,684.91
5. Step 5: Solve for x
   x = 3,289,684.91/2,013.52
6. Step 6: Final answer
   x = 1,633.80