Finding the Fourth Proportional to 2,806.16, 3,870.23 and 2,469.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,806.16 : 3,870.23 = 2,469.34 : x
2. Step 2: Convert to fraction form
   2,806.16/3,870.23 = 2,469.34/x
3. Step 3: Cross multiply
   2,806.16x = 3,870.23 × 2,469.34
4. Step 4: Simplify right side
   2,806.16x = 9,556,888.22
5. Step 5: Solve for x
   x = 9,556,888.22/2,806.16
6. Step 6: Final answer
   x = 3,405.68