Finding the Fourth Proportional to 1,144.73, 1,580.10 and 672.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.73 : 1,580.10 = 672.62 : x
2. Step 2: Convert to fraction form
   1,144.73/1,580.10 = 672.62/x
3. Step 3: Cross multiply
   1,144.73x = 1,580.10 × 672.62
4. Step 4: Simplify right side
   1,144.73x = 1,062,802.91
5. Step 5: Solve for x
   x = 1,062,802.91/1,144.73
6. Step 6: Final answer
   x = 928.43