Finding the Fourth Proportional to 2,418.78, 3,628.48 and 775.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,418.78 : 3,628.48 = 775.82 : x
2. Step 2: Convert to fraction form
   2,418.78/3,628.48 = 775.82/x
3. Step 3: Cross multiply
   2,418.78x = 3,628.48 × 775.82
4. Step 4: Simplify right side
   2,418.78x = 2,815,047.35
5. Step 5: Solve for x
   x = 2,815,047.35/2,418.78
6. Step 6: Final answer
   x = 1,163.83