Finding the Fourth Proportional to 3,418.04, 5,128.06 and 1,109.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,418.04 : 5,128.06 = 1,109.48 : x
2. Step 2: Convert to fraction form
   3,418.04/5,128.06 = 1,109.48/x
3. Step 3: Cross multiply
   3,418.04x = 5,128.06 × 1,109.48
4. Step 4: Simplify right side
   3,418.04x = 5,689,480.01
5. Step 5: Solve for x
   x = 5,689,480.01/3,418.04
6. Step 6: Final answer
   x = 1,664.54