Finding the Fourth Proportional to 2,238.45, 3,357.16 and 851.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.45 : 3,357.16 = 851.94 : x
2. Step 2: Convert to fraction form
   2,238.45/3,357.16 = 851.94/x
3. Step 3: Cross multiply
   2,238.45x = 3,357.16 × 851.94
4. Step 4: Simplify right side
   2,238.45x = 2,860,098.89
5. Step 5: Solve for x
   x = 2,860,098.89/2,238.45
6. Step 6: Final answer
   x = 1,277.71