Finding the Fourth Proportional to 2,150.78, 3,225.18 and 851.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.78 : 3,225.18 = 851.94 : x
2. Step 2: Convert to fraction form
   2,150.78/3,225.18 = 851.94/x
3. Step 3: Cross multiply
   2,150.78x = 3,225.18 × 851.94
4. Step 4: Simplify right side
   2,150.78x = 2,747,659.85
5. Step 5: Solve for x
   x = 2,747,659.85/2,150.78
6. Step 6: Final answer
   x = 1,277.52