Finding the Fourth Proportional to 2,713.86, 3,770.28 and 2,687.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,713.86 : 3,770.28 = 2,687.22 : x
2. Step 2: Convert to fraction form
   2,713.86/3,770.28 = 2,687.22/x
3. Step 3: Cross multiply
   2,713.86x = 3,770.28 × 2,687.22
4. Step 4: Simplify right side
   2,713.86x = 10,131,571.82
5. Step 5: Solve for x
   x = 10,131,571.82/2,713.86
6. Step 6: Final answer
   x = 3,733.27