Finding the Fourth Proportional to 2,019.72, 3,030.97 and 787.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.72 : 3,030.97 = 787.14 : x
2. Step 2: Convert to fraction form
   2,019.72/3,030.97 = 787.14/x
3. Step 3: Cross multiply
   2,019.72x = 3,030.97 × 787.14
4. Step 4: Simplify right side
   2,019.72x = 2,385,797.73
5. Step 5: Solve for x
   x = 2,385,797.73/2,019.72
6. Step 6: Final answer
   x = 1,181.25