Finding the Fourth Proportional to 2,150.32, 3,225.64 and 669.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.32 : 3,225.64 = 669.88 : x
2. Step 2: Convert to fraction form
   2,150.32/3,225.64 = 669.88/x
3. Step 3: Cross multiply
   2,150.32x = 3,225.64 × 669.88
4. Step 4: Simplify right side
   2,150.32x = 2,160,791.72
5. Step 5: Solve for x
   x = 2,160,791.72/2,150.32
6. Step 6: Final answer
   x = 1,004.87