Finding the Fourth Proportional to 2,069.20, 2,855.28 and 1,185.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.20 : 2,855.28 = 1,185.04 : x
2. Step 2: Convert to fraction form
   2,069.20/2,855.28 = 1,185.04/x
3. Step 3: Cross multiply
   2,069.20x = 2,855.28 × 1,185.04
4. Step 4: Simplify right side
   2,069.20x = 3,383,621.01
5. Step 5: Solve for x
   x = 3,383,621.01/2,069.20
6. Step 6: Final answer
   x = 1,635.23