Finding the Fourth Proportional to 2,104.83, 3,151.33 and 1,115.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.83 : 3,151.33 = 1,115.42 : x
2. Step 2: Convert to fraction form
   2,104.83/3,151.33 = 1,115.42/x
3. Step 3: Cross multiply
   2,104.83x = 3,151.33 × 1,115.42
4. Step 4: Simplify right side
   2,104.83x = 3,515,037.96
5. Step 5: Solve for x
   x = 3,515,037.96/2,104.83
6. Step 6: Final answer
   x = 1,669.99