Finding the Fourth Proportional to 2,806.09, 3,870.94 and 2,141.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,806.09 : 3,870.94 = 2,141.79 : x
2. Step 2: Convert to fraction form
   2,806.09/3,870.94 = 2,141.79/x
3. Step 3: Cross multiply
   2,806.09x = 3,870.94 × 2,141.79
4. Step 4: Simplify right side
   2,806.09x = 8,290,746.50
5. Step 5: Solve for x
   x = 8,290,746.50/2,806.09
6. Step 6: Final answer
   x = 2,954.55