Finding the Fourth Proportional to 3,818.56, 5,268.72 and 2,768.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,818.56 : 5,268.72 = 2,768.80 : x
2. Step 2: Convert to fraction form
   3,818.56/5,268.72 = 2,768.80/x
3. Step 3: Cross multiply
   3,818.56x = 5,268.72 × 2,768.80
4. Step 4: Simplify right side
   3,818.56x = 14,588,031.94
5. Step 5: Solve for x
   x = 14,588,031.94/3,818.56
6. Step 6: Final answer
   x = 3,820.30