Finding the Fourth Proportional to 2,300.54, 3,447.72 and 838.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.54 : 3,447.72 = 838.31 : x
2. Step 2: Convert to fraction form
   2,300.54/3,447.72 = 838.31/x
3. Step 3: Cross multiply
   2,300.54x = 3,447.72 × 838.31
4. Step 4: Simplify right side
   2,300.54x = 2,890,240.91
5. Step 5: Solve for x
   x = 2,890,240.91/2,300.54
6. Step 6: Final answer
   x = 1,256.33