Finding the Fourth Proportional to 2,150.38, 3,225.76 and 669.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.38 : 3,225.76 = 669.50 : x
2. Step 2: Convert to fraction form
   2,150.38/3,225.76 = 669.50/x
3. Step 3: Cross multiply
   2,150.38x = 3,225.76 × 669.50
4. Step 4: Simplify right side
   2,150.38x = 2,159,640.61
5. Step 5: Solve for x
   x = 2,159,640.61/2,150.38
6. Step 6: Final answer
   x = 1,004.31