Finding the Fourth Proportional to 3,099.98, 4,648.42 and 1,125.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,099.98 : 4,648.42 = 1,125.54 : x
2. Step 2: Convert to fraction form
   3,099.98/4,648.42 = 1,125.54/x
3. Step 3: Cross multiply
   3,099.98x = 4,648.42 × 1,125.54
4. Step 4: Simplify right side
   3,099.98x = 5,231,982.65
5. Step 5: Solve for x
   x = 5,231,982.65/3,099.98
6. Step 6: Final answer
   x = 1,687.75