Finding the Fourth Proportional to 2,062.82, 3,093.90 and 830.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,062.82 : 3,093.90 = 830.30 : x
2. Step 2: Convert to fraction form
   2,062.82/3,093.90 = 830.30/x
3. Step 3: Cross multiply
   2,062.82x = 3,093.90 × 830.30
4. Step 4: Simplify right side
   2,062.82x = 2,568,863.99
5. Step 5: Solve for x
   x = 2,568,863.99/2,062.82
6. Step 6: Final answer
   x = 1,245.32