Finding the Fourth Proportional to 2,171.81, 3,257.82 and 632.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.81 : 3,257.82 = 632.81 : x
2. Step 2: Convert to fraction form
   2,171.81/3,257.82 = 632.81/x
3. Step 3: Cross multiply
   2,171.81x = 3,257.82 × 632.81
4. Step 4: Simplify right side
   2,171.81x = 2,061,589.22
5. Step 5: Solve for x
   x = 2,061,589.22/2,171.81
6. Step 6: Final answer
   x = 949.25