Finding the Fourth Proportional to 2,069.24, 2,855.72 and 1,283.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.24 : 2,855.72 = 1,283.12 : x
2. Step 2: Convert to fraction form
   2,069.24/2,855.72 = 1,283.12/x
3. Step 3: Cross multiply
   2,069.24x = 2,855.72 × 1,283.12
4. Step 4: Simplify right side
   2,069.24x = 3,664,231.45
5. Step 5: Solve for x
   x = 3,664,231.45/2,069.24
6. Step 6: Final answer
   x = 1,770.81