Finding the Fourth Proportional to 2,443.54, 3,665.43 and 777.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.54 : 3,665.43 = 777.83 : x
2. Step 2: Convert to fraction form
   2,443.54/3,665.43 = 777.83/x
3. Step 3: Cross multiply
   2,443.54x = 3,665.43 × 777.83
4. Step 4: Simplify right side
   2,443.54x = 2,851,077.53
5. Step 5: Solve for x
   x = 2,851,077.53/2,443.54
6. Step 6: Final answer
   x = 1,166.78