Finding the Fourth Proportional to 1,061.86, 1,593.42 and 445.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.86 : 1,593.42 = 445.52 : x
2. Step 2: Convert to fraction form
   1,061.86/1,593.42 = 445.52/x
3. Step 3: Cross multiply
   1,061.86x = 1,593.42 × 445.52
4. Step 4: Simplify right side
   1,061.86x = 709,900.48
5. Step 5: Solve for x
   x = 709,900.48/1,061.86
6. Step 6: Final answer
   x = 668.54