Finding the Fourth Proportional to 1,096.69, 1,645.01 and 447.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.69 : 1,645.01 = 447.42 : x
2. Step 2: Convert to fraction form
   1,096.69/1,645.01 = 447.42/x
3. Step 3: Cross multiply
   1,096.69x = 1,645.01 × 447.42
4. Step 4: Simplify right side
   1,096.69x = 736,015.98
5. Step 5: Solve for x
   x = 736,015.98/1,096.69
6. Step 6: Final answer
   x = 671.13