Finding the Fourth Proportional to 1,171.37, 1,756.81 and 440.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.37 : 1,756.81 = 440.69 : x
2. Step 2: Convert to fraction form
   1,171.37/1,756.81 = 440.69/x
3. Step 3: Cross multiply
   1,171.37x = 1,756.81 × 440.69
4. Step 4: Simplify right side
   1,171.37x = 774,211.89
5. Step 5: Solve for x
   x = 774,211.89/1,171.37
6. Step 6: Final answer
   x = 660.94