Finding the Fourth Proportional to 2,019.53, 3,030.44 and 786.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.53 : 3,030.44 = 786.79 : x
2. Step 2: Convert to fraction form
   2,019.53/3,030.44 = 786.79/x
3. Step 3: Cross multiply
   2,019.53x = 3,030.44 × 786.79
4. Step 4: Simplify right side
   2,019.53x = 2,384,308.38
5. Step 5: Solve for x
   x = 2,384,308.38/2,019.53
6. Step 6: Final answer
   x = 1,180.62