Finding the Fourth Proportional to 1,171.98, 1,758.31 and 441.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.98 : 1,758.31 = 441.61 : x
2. Step 2: Convert to fraction form
   1,171.98/1,758.31 = 441.61/x
3. Step 3: Cross multiply
   1,171.98x = 1,758.31 × 441.61
4. Step 4: Simplify right side
   1,171.98x = 776,481.78
5. Step 5: Solve for x
   x = 776,481.78/1,171.98
6. Step 6: Final answer
   x = 662.54