Finding the Fourth Proportional to 3,022.09, 4,532.31 and 830.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,022.09 : 4,532.31 = 830.31 : x
2. Step 2: Convert to fraction form
   3,022.09/4,532.31 = 830.31/x
3. Step 3: Cross multiply
   3,022.09x = 4,532.31 × 830.31
4. Step 4: Simplify right side
   3,022.09x = 3,763,222.32
5. Step 5: Solve for x
   x = 3,763,222.32/3,022.09
6. Step 6: Final answer
   x = 1,245.24