Finding the Fourth Proportional to 2,568.18, 3,852.54 and 836.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.18 : 3,852.54 = 836.40 : x
2. Step 2: Convert to fraction form
   2,568.18/3,852.54 = 836.40/x
3. Step 3: Cross multiply
   2,568.18x = 3,852.54 × 836.40
4. Step 4: Simplify right side
   2,568.18x = 3,222,264.46
5. Step 5: Solve for x
   x = 3,222,264.46/2,568.18
6. Step 6: Final answer
   x = 1,254.69