Finding the Fourth Proportional to 3,445.58, 5,169.37 and 1,105.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,445.58 : 5,169.37 = 1,105.53 : x
2. Step 2: Convert to fraction form
   3,445.58/5,169.37 = 1,105.53/x
3. Step 3: Cross multiply
   3,445.58x = 5,169.37 × 1,105.53
4. Step 4: Simplify right side
   3,445.58x = 5,714,902.52
5. Step 5: Solve for x
   x = 5,714,902.52/3,445.58
6. Step 6: Final answer
   x = 1,658.62