Finding the Fourth Proportional to 2,757.78, 4,136.62 and 909.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,757.78 : 4,136.62 = 909.01 : x
2. Step 2: Convert to fraction form
   2,757.78/4,136.62 = 909.01/x
3. Step 3: Cross multiply
   2,757.78x = 4,136.62 × 909.01
4. Step 4: Simplify right side
   2,757.78x = 3,760,227.73
5. Step 5: Solve for x
   x = 3,760,227.73/2,757.78
6. Step 6: Final answer
   x = 1,363.50