Finding the Fourth Proportional to 2,758.77, 3,805.25 and 1,919.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758.77 : 3,805.25 = 1,919.61 : x
2. Step 2: Convert to fraction form
   2,758.77/3,805.25 = 1,919.61/x
3. Step 3: Cross multiply
   2,758.77x = 3,805.25 × 1,919.61
4. Step 4: Simplify right side
   2,758.77x = 7,304,586.35
5. Step 5: Solve for x
   x = 7,304,586.35/2,758.77
6. Step 6: Final answer
   x = 2,647.77