Finding the Fourth Proportional to 3,800.89, 5,697.68 and 2,686.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,800.89 : 5,697.68 = 2,686.83 : x
2. Step 2: Convert to fraction form
   3,800.89/5,697.68 = 2,686.83/x
3. Step 3: Cross multiply
   3,800.89x = 5,697.68 × 2,686.83
4. Step 4: Simplify right side
   3,800.89x = 15,308,697.55
5. Step 5: Solve for x
   x = 15,308,697.55/3,800.89
6. Step 6: Final answer
   x = 4,027.66