Finding the Fourth Proportional to 2,895.27, 4,342.56 and 815.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,895.27 : 4,342.56 = 815.43 : x
2. Step 2: Convert to fraction form
   2,895.27/4,342.56 = 815.43/x
3. Step 3: Cross multiply
   2,895.27x = 4,342.56 × 815.43
4. Step 4: Simplify right side
   2,895.27x = 3,541,053.70
5. Step 5: Solve for x
   x = 3,541,053.70/2,895.27
6. Step 6: Final answer
   x = 1,223.05