Finding the Fourth Proportional to 3,674.98, 5,511.64 and 1,078.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,674.98 : 5,511.64 = 1,078.12 : x
2. Step 2: Convert to fraction form
   3,674.98/5,511.64 = 1,078.12/x
3. Step 3: Cross multiply
   3,674.98x = 5,511.64 × 1,078.12
4. Step 4: Simplify right side
   3,674.98x = 5,942,209.32
5. Step 5: Solve for x
   x = 5,942,209.32/3,674.98
6. Step 6: Final answer
   x = 1,616.94