Finding the Fourth Proportional to 3,608.82, 5,407.56 and 2,789.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,608.82 : 5,407.56 = 2,789.10 : x
2. Step 2: Convert to fraction form
   3,608.82/5,407.56 = 2,789.10/x
3. Step 3: Cross multiply
   3,608.82x = 5,407.56 × 2,789.10
4. Step 4: Simplify right side
   3,608.82x = 15,082,225.60
5. Step 5: Solve for x
   x = 15,082,225.60/3,608.82
6. Step 6: Final answer
   x = 4,179.27