Finding the Fourth Proportional to 1,066.76, 1,599.09 and 450.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.76 : 1,599.09 = 450.89 : x
2. Step 2: Convert to fraction form
   1,066.76/1,599.09 = 450.89/x
3. Step 3: Cross multiply
   1,066.76x = 1,599.09 × 450.89
4. Step 4: Simplify right side
   1,066.76x = 721,013.69
5. Step 5: Solve for x
   x = 721,013.69/1,066.76
6. Step 6: Final answer
   x = 675.89