Finding the Fourth Proportional to 2,107.35, 3,160.42 and 808.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.35 : 3,160.42 = 808.52 : x
2. Step 2: Convert to fraction form
   2,107.35/3,160.42 = 808.52/x
3. Step 3: Cross multiply
   2,107.35x = 3,160.42 × 808.52
4. Step 4: Simplify right side
   2,107.35x = 2,555,262.78
5. Step 5: Solve for x
   x = 2,555,262.78/2,107.35
6. Step 6: Final answer
   x = 1,212.55