Finding the Fourth Proportional to 1,144.32, 1,579.16 and 672.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.32 : 1,579.16 = 672.48 : x
2. Step 2: Convert to fraction form
   1,144.32/1,579.16 = 672.48/x
3. Step 3: Cross multiply
   1,144.32x = 1,579.16 × 672.48
4. Step 4: Simplify right side
   1,144.32x = 1,061,953.52
5. Step 5: Solve for x
   x = 1,061,953.52/1,144.32
6. Step 6: Final answer
   x = 928.02