Finding the Fourth Proportional to 3,298.61, 4,948.92 and 1,107.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,298.61 : 4,948.92 = 1,107.15 : x
2. Step 2: Convert to fraction form
   3,298.61/4,948.92 = 1,107.15/x
3. Step 3: Cross multiply
   3,298.61x = 4,948.92 × 1,107.15
4. Step 4: Simplify right side
   3,298.61x = 5,479,196.78
5. Step 5: Solve for x
   x = 5,479,196.78/3,298.61
6. Step 6: Final answer
   x = 1,661.06