Finding the Fourth Proportional to 2,806.32, 3,871.79 and 1,812.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,806.32 : 3,871.79 = 1,812.27 : x
2. Step 2: Convert to fraction form
   2,806.32/3,871.79 = 1,812.27/x
3. Step 3: Cross multiply
   2,806.32x = 3,871.79 × 1,812.27
4. Step 4: Simplify right side
   2,806.32x = 7,016,729.48
5. Step 5: Solve for x
   x = 7,016,729.48/2,806.32
6. Step 6: Final answer
   x = 2,500.33