Finding the Fourth Proportional to 1,143.89, 1,714.92 and 450.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.89 : 1,714.92 = 450.73 : x
2. Step 2: Convert to fraction form
   1,143.89/1,714.92 = 450.73/x
3. Step 3: Cross multiply
   1,143.89x = 1,714.92 × 450.73
4. Step 4: Simplify right side
   1,143.89x = 772,965.89
5. Step 5: Solve for x
   x = 772,965.89/1,143.89
6. Step 6: Final answer
   x = 675.73