Finding the Fourth Proportional to 3,745.98, 5,171.56 and 2,488.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,745.98 : 5,171.56 = 2,488.76 : x
2. Step 2: Convert to fraction form
   3,745.98/5,171.56 = 2,488.76/x
3. Step 3: Cross multiply
   3,745.98x = 5,171.56 × 2,488.76
4. Step 4: Simplify right side
   3,745.98x = 12,870,771.67
5. Step 5: Solve for x
   x = 12,870,771.67/3,745.98
6. Step 6: Final answer
   x = 3,435.89