Finding the Fourth Proportional to 1,061.81, 1,593.33 and 445.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.81 : 1,593.33 = 445.46 : x
2. Step 2: Convert to fraction form
   1,061.81/1,593.33 = 445.46/x
3. Step 3: Cross multiply
   1,061.81x = 1,593.33 × 445.46
4. Step 4: Simplify right side
   1,061.81x = 709,762.55
5. Step 5: Solve for x
   x = 709,762.55/1,061.81
6. Step 6: Final answer
   x = 668.45