Finding the Fourth Proportional to 2,756.71, 4,134.52 and 808.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,756.71 : 4,134.52 = 808.39 : x
2. Step 2: Convert to fraction form
   2,756.71/4,134.52 = 808.39/x
3. Step 3: Cross multiply
   2,756.71x = 4,134.52 × 808.39
4. Step 4: Simplify right side
   2,756.71x = 3,342,304.62
5. Step 5: Solve for x
   x = 3,342,304.62/2,756.71
6. Step 6: Final answer
   x = 1,212.43