Finding the Fourth Proportional to 2,870.41, 3,960.17 and 1,808.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.41 : 3,960.17 = 1,808.27 : x
2. Step 2: Convert to fraction form
   2,870.41/3,960.17 = 1,808.27/x
3. Step 3: Cross multiply
   2,870.41x = 3,960.17 × 1,808.27
4. Step 4: Simplify right side
   2,870.41x = 7,161,036.81
5. Step 5: Solve for x
   x = 7,161,036.81/2,870.41
6. Step 6: Final answer
   x = 2,494.78