Finding the Fourth Proportional to 2,238.91, 3,357.49 and 851.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.91 : 3,357.49 = 851.51 : x
2. Step 2: Convert to fraction form
   2,238.91/3,357.49 = 851.51/x
3. Step 3: Cross multiply
   2,238.91x = 3,357.49 × 851.51
4. Step 4: Simplify right side
   2,238.91x = 2,858,936.31
5. Step 5: Solve for x
   x = 2,858,936.31/2,238.91
6. Step 6: Final answer
   x = 1,276.93