Finding the Fourth Proportional to 2,798.77, 3,860.20 and 2,674.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,798.77 : 3,860.20 = 2,674.69 : x
2. Step 2: Convert to fraction form
   2,798.77/3,860.20 = 2,674.69/x
3. Step 3: Cross multiply
   2,798.77x = 3,860.20 × 2,674.69
4. Step 4: Simplify right side
   2,798.77x = 10,324,838.34
5. Step 5: Solve for x
   x = 10,324,838.34/2,798.77
6. Step 6: Final answer
   x = 3,689.06