Finding the Fourth Proportional to 2,216.86, 3,321.63 and 982.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.86 : 3,321.63 = 982.42 : x
2. Step 2: Convert to fraction form
   2,216.86/3,321.63 = 982.42/x
3. Step 3: Cross multiply
   2,216.86x = 3,321.63 × 982.42
4. Step 4: Simplify right side
   2,216.86x = 3,263,235.74
5. Step 5: Solve for x
   x = 3,263,235.74/2,216.86
6. Step 6: Final answer
   x = 1,472.01