Finding the Fourth Proportional to 2,021.49, 3,030.74 and 788.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.49 : 3,030.74 = 788.27 : x
2. Step 2: Convert to fraction form
   2,021.49/3,030.74 = 788.27/x
3. Step 3: Cross multiply
   2,021.49x = 3,030.74 × 788.27
4. Step 4: Simplify right side
   2,021.49x = 2,389,022.32
5. Step 5: Solve for x
   x = 2,389,022.32/2,021.49
6. Step 6: Final answer
   x = 1,181.81