Finding the Fourth Proportional to 1,099.89, 1,650.56 and 450.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.89 : 1,650.56 = 450.63 : x
2. Step 2: Convert to fraction form
   1,099.89/1,650.56 = 450.63/x
3. Step 3: Cross multiply
   1,099.89x = 1,650.56 × 450.63
4. Step 4: Simplify right side
   1,099.89x = 743,789.60
5. Step 5: Solve for x
   x = 743,789.60/1,099.89
6. Step 6: Final answer
   x = 676.24