Finding the Fourth Proportional to 2,539.52, 3,809.24 and 808.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,539.52 : 3,809.24 = 808.12 : x
2. Step 2: Convert to fraction form
   2,539.52/3,809.24 = 808.12/x
3. Step 3: Cross multiply
   2,539.52x = 3,809.24 × 808.12
4. Step 4: Simplify right side
   2,539.52x = 3,078,323.03
5. Step 5: Solve for x
   x = 3,078,323.03/2,539.52
6. Step 6: Final answer
   x = 1,212.17