Finding the Fourth Proportional to 2,150.53, 3,227.07 and 851.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.53 : 3,227.07 = 851.96 : x
2. Step 2: Convert to fraction form
   2,150.53/3,227.07 = 851.96/x
3. Step 3: Cross multiply
   2,150.53x = 3,227.07 × 851.96
4. Step 4: Simplify right side
   2,150.53x = 2,749,334.56
5. Step 5: Solve for x
   x = 2,749,334.56/2,150.53
6. Step 6: Final answer
   x = 1,278.45