Finding the Fourth Proportional to 1,144.27, 1,579.10 and 672.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.27 : 1,579.10 = 672.06 : x
2. Step 2: Convert to fraction form
   1,144.27/1,579.10 = 672.06/x
3. Step 3: Cross multiply
   1,144.27x = 1,579.10 × 672.06
4. Step 4: Simplify right side
   1,144.27x = 1,061,249.95
5. Step 5: Solve for x
   x = 1,061,249.95/1,144.27
6. Step 6: Final answer
   x = 927.45