Finding the Fourth Proportional to 2,020.89, 3,030.52 and 788.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.89 : 3,030.52 = 788.12 : x
2. Step 2: Convert to fraction form
   2,020.89/3,030.52 = 788.12/x
3. Step 3: Cross multiply
   2,020.89x = 3,030.52 × 788.12
4. Step 4: Simplify right side
   2,020.89x = 2,388,413.42
5. Step 5: Solve for x
   x = 2,388,413.42/2,020.89
6. Step 6: Final answer
   x = 1,181.86