Finding the Fourth Proportional to 1,171.81, 1,758.45 and 441.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.81 : 1,758.45 = 441.32 : x
2. Step 2: Convert to fraction form
   1,171.81/1,758.45 = 441.32/x
3. Step 3: Cross multiply
   1,171.81x = 1,758.45 × 441.32
4. Step 4: Simplify right side
   1,171.81x = 776,039.15
5. Step 5: Solve for x
   x = 776,039.15/1,171.81
6. Step 6: Final answer
   x = 662.26