Finding the Fourth Proportional to 2,728.16, 4,089.32 and 1,084.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,728.16 : 4,089.32 = 1,084.04 : x
2. Step 2: Convert to fraction form
   2,728.16/4,089.32 = 1,084.04/x
3. Step 3: Cross multiply
   2,728.16x = 4,089.32 × 1,084.04
4. Step 4: Simplify right side
   2,728.16x = 4,432,986.45
5. Step 5: Solve for x
   x = 4,432,986.45/2,728.16
6. Step 6: Final answer
   x = 1,624.90