Finding the Fourth Proportional to 2,567.92, 3,851.79 and 836.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,567.92 : 3,851.79 = 836.50 : x
2. Step 2: Convert to fraction form
   2,567.92/3,851.79 = 836.50/x
3. Step 3: Cross multiply
   2,567.92x = 3,851.79 × 836.50
4. Step 4: Simplify right side
   2,567.92x = 3,222,022.34
5. Step 5: Solve for x
   x = 3,222,022.34/2,567.92
6. Step 6: Final answer
   x = 1,254.72