Finding the Fourth Proportional to 3,418.41, 5,127.82 and 1,078.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,418.41 : 5,127.82 = 1,078.49 : x
2. Step 2: Convert to fraction form
   3,418.41/5,127.82 = 1,078.49/x
3. Step 3: Cross multiply
   3,418.41x = 5,127.82 × 1,078.49
4. Step 4: Simplify right side
   3,418.41x = 5,530,302.59
5. Step 5: Solve for x
   x = 5,530,302.59/3,418.41
6. Step 6: Final answer
   x = 1,617.80