Finding the Fourth Proportional to 1,174.69, 1,761.50 and 443.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.69 : 1,761.50 = 443.75 : x
2. Step 2: Convert to fraction form
   1,174.69/1,761.50 = 443.75/x
3. Step 3: Cross multiply
   1,174.69x = 1,761.50 × 443.75
4. Step 4: Simplify right side
   1,174.69x = 781,654.60
5. Step 5: Solve for x
   x = 781,654.60/1,174.69
6. Step 6: Final answer
   x = 665.42