Finding the Fourth Proportional to 1,173.57, 1,760.61 and 443.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.57 : 1,760.61 = 443.14 : x
2. Step 2: Convert to fraction form
   1,173.57/1,760.61 = 443.14/x
3. Step 3: Cross multiply
   1,173.57x = 1,760.61 × 443.14
4. Step 4: Simplify right side
   1,173.57x = 780,200.01
5. Step 5: Solve for x
   x = 780,200.01/1,173.57
6. Step 6: Final answer
   x = 664.81