Finding the Fourth Proportional to 3,675.98, 5,513.37 and 1,078.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,675.98 : 5,513.37 = 1,078.31 : x
2. Step 2: Convert to fraction form
   3,675.98/5,513.37 = 1,078.31/x
3. Step 3: Cross multiply
   3,675.98x = 5,513.37 × 1,078.31
4. Step 4: Simplify right side
   3,675.98x = 5,945,131.74
5. Step 5: Solve for x
   x = 5,945,131.74/3,675.98
6. Step 6: Final answer
   x = 1,617.29