Finding the Fourth Proportional to 2,836.47, 4,257.15 and 1,106.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,836.47 : 4,257.15 = 1,106.31 : x
2. Step 2: Convert to fraction form
   2,836.47/4,257.15 = 1,106.31/x
3. Step 3: Cross multiply
   2,836.47x = 4,257.15 × 1,106.31
4. Step 4: Simplify right side
   2,836.47x = 4,709,727.62
5. Step 5: Solve for x
   x = 4,709,727.62/2,836.47
6. Step 6: Final answer
   x = 1,660.42