Finding the Fourth Proportional to 2,215.72, 3,323.12 and 982.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.72 : 3,323.12 = 982.34 : x
2. Step 2: Convert to fraction form
   2,215.72/3,323.12 = 982.34/x
3. Step 3: Cross multiply
   2,215.72x = 3,323.12 × 982.34
4. Step 4: Simplify right side
   2,215.72x = 3,264,446.09
5. Step 5: Solve for x
   x = 3,264,446.09/2,215.72
6. Step 6: Final answer
   x = 1,473.31