Finding the Fourth Proportional to 1,044.18, 1,563.84 and 678.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,044.18 : 1,563.84 = 678.47 : x
2. Step 2: Convert to fraction form
   1,044.18/1,563.84 = 678.47/x
3. Step 3: Cross multiply
   1,044.18x = 1,563.84 × 678.47
4. Step 4: Simplify right side
   1,044.18x = 1,061,010.71
5. Step 5: Solve for x
   x = 1,061,010.71/1,044.18
6. Step 6: Final answer
   x = 1,016.12