Finding the Fourth Proportional to 2,150.19, 3,225.69 and 851.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.19 : 3,225.69 = 851.67 : x
2. Step 2: Convert to fraction form
   2,150.19/3,225.69 = 851.67/x
3. Step 3: Cross multiply
   2,150.19x = 3,225.69 × 851.67
4. Step 4: Simplify right side
   2,150.19x = 2,747,223.40
5. Step 5: Solve for x
   x = 2,747,223.40/2,150.19
6. Step 6: Final answer
   x = 1,277.67