Finding the Fourth Proportional to 2,294.58, 3,440.34 and 812.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,294.58 : 3,440.34 = 812.82 : x
2. Step 2: Convert to fraction form
   2,294.58/3,440.34 = 812.82/x
3. Step 3: Cross multiply
   2,294.58x = 3,440.34 × 812.82
4. Step 4: Simplify right side
   2,294.58x = 2,796,377.16
5. Step 5: Solve for x
   x = 2,796,377.16/2,294.58
6. Step 6: Final answer
   x = 1,218.69