Finding the Fourth Proportional to 2,567.69, 3,851.53 and 836.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,567.69 : 3,851.53 = 836.31 : x
2. Step 2: Convert to fraction form
   2,567.69/3,851.53 = 836.31/x
3. Step 3: Cross multiply
   2,567.69x = 3,851.53 × 836.31
4. Step 4: Simplify right side
   2,567.69x = 3,221,073.05
5. Step 5: Solve for x
   x = 3,221,073.05/2,567.69
6. Step 6: Final answer
   x = 1,254.46