Finding the Fourth Proportional to 2,796.50, 3,860.79 and 1,866.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,796.50 : 3,860.79 = 1,866.62 : x
2. Step 2: Convert to fraction form
   2,796.50/3,860.79 = 1,866.62/x
3. Step 3: Cross multiply
   2,796.50x = 3,860.79 × 1,866.62
4. Step 4: Simplify right side
   2,796.50x = 7,206,627.83
5. Step 5: Solve for x
   x = 7,206,627.83/2,796.50
6. Step 6: Final answer
   x = 2,577.02