Finding the Fourth Proportional to 2,152.63, 3,227.12 and 982.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.63 : 3,227.12 = 982.21 : x
2. Step 2: Convert to fraction form
   2,152.63/3,227.12 = 982.21/x
3. Step 3: Cross multiply
   2,152.63x = 3,227.12 × 982.21
4. Step 4: Simplify right side
   2,152.63x = 3,169,709.54
5. Step 5: Solve for x
   x = 3,169,709.54/2,152.63
6. Step 6: Final answer
   x = 1,472.48