Finding the Fourth Proportional to 2,225.25, 3,337.47 and 838.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.25 : 3,337.47 = 838.71 : x
2. Step 2: Convert to fraction form
   2,225.25/3,337.47 = 838.71/x
3. Step 3: Cross multiply
   2,225.25x = 3,337.47 × 838.71
4. Step 4: Simplify right side
   2,225.25x = 2,799,169.46
5. Step 5: Solve for x
   x = 2,799,169.46/2,225.25
6. Step 6: Final answer
   x = 1,257.91