Finding the Fourth Proportional to 2,873.57, 3,965.41 and 1,866.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,873.57 : 3,965.41 = 1,866.29 : x
2. Step 2: Convert to fraction form
   2,873.57/3,965.41 = 1,866.29/x
3. Step 3: Cross multiply
   2,873.57x = 3,965.41 × 1,866.29
4. Step 4: Simplify right side
   2,873.57x = 7,400,605.03
5. Step 5: Solve for x
   x = 7,400,605.03/2,873.57
6. Step 6: Final answer
   x = 2,575.40