Finding the Fourth Proportional to 2,225.98, 3,335.37 and 838.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.98 : 3,335.37 = 838.72 : x
2. Step 2: Convert to fraction form
   2,225.98/3,335.37 = 838.72/x
3. Step 3: Cross multiply
   2,225.98x = 3,335.37 × 838.72
4. Step 4: Simplify right side
   2,225.98x = 2,797,441.53
5. Step 5: Solve for x
   x = 2,797,441.53/2,225.98
6. Step 6: Final answer
   x = 1,256.72