Finding the Fourth Proportional to 2,020.49, 3,030.91 and 850.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.49 : 3,030.91 = 850.83 : x
2. Step 2: Convert to fraction form
   2,020.49/3,030.91 = 850.83/x
3. Step 3: Cross multiply
   2,020.49x = 3,030.91 × 850.83
4. Step 4: Simplify right side
   2,020.49x = 2,578,789.16
5. Step 5: Solve for x
   x = 2,578,789.16/2,020.49
6. Step 6: Final answer
   x = 1,276.32