Finding the Fourth Proportional to 3,675.12, 5,513.16 and 1,078.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,675.12 : 5,513.16 = 1,078.32 : x
2. Step 2: Convert to fraction form
   3,675.12/5,513.16 = 1,078.32/x
3. Step 3: Cross multiply
   3,675.12x = 5,513.16 × 1,078.32
4. Step 4: Simplify right side
   3,675.12x = 5,944,950.69
5. Step 5: Solve for x
   x = 5,944,950.69/3,675.12
6. Step 6: Final answer
   x = 1,617.62