Finding the Fourth Proportional to 2,150.06, 3,225.20 and 689.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.06 : 3,225.20 = 689.23 : x
2. Step 2: Convert to fraction form
   2,150.06/3,225.20 = 689.23/x
3. Step 3: Cross multiply
   2,150.06x = 3,225.20 × 689.23
4. Step 4: Simplify right side
   2,150.06x = 2,222,890.92
5. Step 5: Solve for x
   x = 2,222,890.92/2,150.06
6. Step 6: Final answer
   x = 1,033.87