Finding the Fourth Proportional to 2,418.59, 3,628.34 and 774.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,418.59 : 3,628.34 = 774.69 : x
2. Step 2: Convert to fraction form
   2,418.59/3,628.34 = 774.69/x
3. Step 3: Cross multiply
   2,418.59x = 3,628.34 × 774.69
4. Step 4: Simplify right side
   2,418.59x = 2,810,834.84
5. Step 5: Solve for x
   x = 2,810,834.84/2,418.59
6. Step 6: Final answer
   x = 1,162.18