Finding the Fourth Proportional to 2,300.40, 3,447.90 and 838.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.40 : 3,447.90 = 838.62 : x
2. Step 2: Convert to fraction form
   2,300.40/3,447.90 = 838.62/x
3. Step 3: Cross multiply
   2,300.40x = 3,447.90 × 838.62
4. Step 4: Simplify right side
   2,300.40x = 2,891,477.90
5. Step 5: Solve for x
   x = 2,891,477.90/2,300.40
6. Step 6: Final answer
   x = 1,256.95