Finding the Fourth Proportional to 1,061.55, 1,593.03 and 404.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.55 : 1,593.03 = 404.03 : x
2. Step 2: Convert to fraction form
   1,061.55/1,593.03 = 404.03/x
3. Step 3: Cross multiply
   1,061.55x = 1,593.03 × 404.03
4. Step 4: Simplify right side
   1,061.55x = 643,635.89
5. Step 5: Solve for x
   x = 643,635.89/1,061.55
6. Step 6: Final answer
   x = 606.32