Finding the Fourth Proportional to 2,162.34, 3,241.64 and 864.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.34 : 3,241.64 = 864.72 : x
2. Step 2: Convert to fraction form
   2,162.34/3,241.64 = 864.72/x
3. Step 3: Cross multiply
   2,162.34x = 3,241.64 × 864.72
4. Step 4: Simplify right side
   2,162.34x = 2,803,110.94
5. Step 5: Solve for x
   x = 2,803,110.94/2,162.34
6. Step 6: Final answer
   x = 1,296.33