Finding the Fourth Proportional to 1,044.31, 1,441.15 and 578.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,044.31 : 1,441.15 = 578.56 : x
2. Step 2: Convert to fraction form
   1,044.31/1,441.15 = 578.56/x
3. Step 3: Cross multiply
   1,044.31x = 1,441.15 × 578.56
4. Step 4: Simplify right side
   1,044.31x = 833,791.74
5. Step 5: Solve for x
   x = 833,791.74/1,044.31
6. Step 6: Final answer
   x = 798.41