Finding the Fourth Proportional to 3,412.10, 5,119.76 and 1,103.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,412.10 : 5,119.76 = 1,103.60 : x
2. Step 2: Convert to fraction form
   3,412.10/5,119.76 = 1,103.60/x
3. Step 3: Cross multiply
   3,412.10x = 5,119.76 × 1,103.60
4. Step 4: Simplify right side
   3,412.10x = 5,650,141.54
5. Step 5: Solve for x
   x = 5,650,141.54/3,412.10
6. Step 6: Final answer
   x = 1,655.92