Finding the Fourth Proportional to 1,173.98, 1,760.76 and 443.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.98 : 1,760.76 = 443.32 : x
2. Step 2: Convert to fraction form
   1,173.98/1,760.76 = 443.32/x
3. Step 3: Cross multiply
   1,173.98x = 1,760.76 × 443.32
4. Step 4: Simplify right side
   1,173.98x = 780,575.72
5. Step 5: Solve for x
   x = 780,575.72/1,173.98
6. Step 6: Final answer
   x = 664.90