Finding the Fourth Proportional to 3,300.54, 4,947.71 and 1,107.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,300.54 : 4,947.71 = 1,107.74 : x
2. Step 2: Convert to fraction form
   3,300.54/4,947.71 = 1,107.74/x
3. Step 3: Cross multiply
   3,300.54x = 4,947.71 × 1,107.74
4. Step 4: Simplify right side
   3,300.54x = 5,480,754.31
5. Step 5: Solve for x
   x = 5,480,754.31/3,300.54
6. Step 6: Final answer
   x = 1,660.56