Finding the Fourth Proportional to 2,238.08, 3,357.15 and 851.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.08 : 3,357.15 = 851.16 : x
2. Step 2: Convert to fraction form
   2,238.08/3,357.15 = 851.16/x
3. Step 3: Cross multiply
   2,238.08x = 3,357.15 × 851.16
4. Step 4: Simplify right side
   2,238.08x = 2,857,462.31
5. Step 5: Solve for x
   x = 2,857,462.31/2,238.08
6. Step 6: Final answer
   x = 1,276.75