Finding the Fourth Proportional to 3,105.06, 4,659.48 and 1,158.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.06 : 4,659.48 = 1,158.90 : x
2. Step 2: Convert to fraction form
   3,105.06/4,659.48 = 1,158.90/x
3. Step 3: Cross multiply
   3,105.06x = 4,659.48 × 1,158.90
4. Step 4: Simplify right side
   3,105.06x = 5,399,871.37
5. Step 5: Solve for x
   x = 5,399,871.37/3,105.06
6. Step 6: Final answer
   x = 1,739.06