Finding the Fourth Proportional to 1,061.82, 1,591.56 and 445.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.82 : 1,591.56 = 445.14 : x
2. Step 2: Convert to fraction form
   1,061.82/1,591.56 = 445.14/x
3. Step 3: Cross multiply
   1,061.82x = 1,591.56 × 445.14
4. Step 4: Simplify right side
   1,061.82x = 708,467.02
5. Step 5: Solve for x
   x = 708,467.02/1,061.82
6. Step 6: Final answer
   x = 667.22