Finding the Fourth Proportional to 1,100.39, 1,649.36 and 450.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.39 : 1,649.36 = 450.56 : x
2. Step 2: Convert to fraction form
   1,100.39/1,649.36 = 450.56/x
3. Step 3: Cross multiply
   1,100.39x = 1,649.36 × 450.56
4. Step 4: Simplify right side
   1,100.39x = 743,140.89
5. Step 5: Solve for x
   x = 743,140.89/1,100.39
6. Step 6: Final answer
   x = 675.35