Finding the Fourth Proportional to 3,105.10, 4,656.18 and 1,129.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.10 : 4,656.18 = 1,129.35 : x
2. Step 2: Convert to fraction form
   3,105.10/4,656.18 = 1,129.35/x
3. Step 3: Cross multiply
   3,105.10x = 4,656.18 × 1,129.35
4. Step 4: Simplify right side
   3,105.10x = 5,258,456.88
5. Step 5: Solve for x
   x = 5,258,456.88/3,105.10
6. Step 6: Final answer
   x = 1,693.49