Finding the Fourth Proportional to 3,443.19, 5,166.45 and 1,103.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,443.19 : 5,166.45 = 1,103.55 : x
2. Step 2: Convert to fraction form
   3,443.19/5,166.45 = 1,103.55/x
3. Step 3: Cross multiply
   3,443.19x = 5,166.45 × 1,103.55
4. Step 4: Simplify right side
   3,443.19x = 5,701,435.90
5. Step 5: Solve for x
   x = 5,701,435.90/3,443.19
6. Step 6: Final answer
   x = 1,655.86