Finding the Fourth Proportional to 3,412.09, 5,119.76 and 1,103.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,412.09 : 5,119.76 = 1,103.59 : x
2. Step 2: Convert to fraction form
   3,412.09/5,119.76 = 1,103.59/x
3. Step 3: Cross multiply
   3,412.09x = 5,119.76 × 1,103.59
4. Step 4: Simplify right side
   3,412.09x = 5,650,115.94
5. Step 5: Solve for x
   x = 5,650,115.94/3,412.09
6. Step 6: Final answer
   x = 1,655.91