Finding the Fourth Proportional to 2,150.51, 3,225.69 and 689.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.51 : 3,225.69 = 689.67 : x
2. Step 2: Convert to fraction form
   2,150.51/3,225.69 = 689.67/x
3. Step 3: Cross multiply
   2,150.51x = 3,225.69 × 689.67
4. Step 4: Simplify right side
   2,150.51x = 2,224,661.62
5. Step 5: Solve for x
   x = 2,224,661.62/2,150.51
6. Step 6: Final answer
   x = 1,034.48