Finding the Fourth Proportional to 1,044, 1,440.72 and 578.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,044 : 1,440.72 = 578.25 : x
2. Step 2: Convert to fraction form
   1,044/1,440.72 = 578.25/x
3. Step 3: Cross multiply
   1,044x = 1,440.72 × 578.25
4. Step 4: Simplify right side
   1,044x = 833,096.34
5. Step 5: Solve for x
   x = 833,096.34/1,044
6. Step 6: Final answer
   x = 797.99