Finding the Fourth Proportional to 2,139.32, 3,206.52 and 982.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.32 : 3,206.52 = 982.64 : x
2. Step 2: Convert to fraction form
   2,139.32/3,206.52 = 982.64/x
3. Step 3: Cross multiply
   2,139.32x = 3,206.52 × 982.64
4. Step 4: Simplify right side
   2,139.32x = 3,150,854.81
5. Step 5: Solve for x
   x = 3,150,854.81/2,139.32
6. Step 6: Final answer
   x = 1,472.83