Finding the Fourth Proportional to 3,849.78, 5,775.54 and 1,217.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,849.78 : 5,775.54 = 1,217.27 : x
2. Step 2: Convert to fraction form
   3,849.78/5,775.54 = 1,217.27/x
3. Step 3: Cross multiply
   3,849.78x = 5,775.54 × 1,217.27
4. Step 4: Simplify right side
   3,849.78x = 7,030,362.70
5. Step 5: Solve for x
   x = 7,030,362.70/3,849.78
6. Step 6: Final answer
   x = 1,826.17