Finding the Fourth Proportional to 1,173.56, 1,760.82 and 443.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.56 : 1,760.82 = 443.35 : x
2. Step 2: Convert to fraction form
   1,173.56/1,760.82 = 443.35/x
3. Step 3: Cross multiply
   1,173.56x = 1,760.82 × 443.35
4. Step 4: Simplify right side
   1,173.56x = 780,648.53
5. Step 5: Solve for x
   x = 780,648.53/1,173.56
6. Step 6: Final answer
   x = 665.20