Finding the Fourth Proportional to 2,150.23, 3,225.20 and 669.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.23 : 3,225.20 = 669.42 : x
2. Step 2: Convert to fraction form
   2,150.23/3,225.20 = 669.42/x
3. Step 3: Cross multiply
   2,150.23x = 3,225.20 × 669.42
4. Step 4: Simplify right side
   2,150.23x = 2,159,013.38
5. Step 5: Solve for x
   x = 2,159,013.38/2,150.23
6. Step 6: Final answer
   x = 1,004.08