Finding the Fourth Proportional to 2,069.43, 2,855.81 and 1,185.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.43 : 2,855.81 = 1,185.23 : x
2. Step 2: Convert to fraction form
   2,069.43/2,855.81 = 1,185.23/x
3. Step 3: Cross multiply
   2,069.43x = 2,855.81 × 1,185.23
4. Step 4: Simplify right side
   2,069.43x = 3,384,785.76
5. Step 5: Solve for x
   x = 3,384,785.76/2,069.43
6. Step 6: Final answer
   x = 1,635.62