Finding the Fourth Proportional to 3,105.59, 4,659.34 and 1,077.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.59 : 4,659.34 = 1,077.15 : x
2. Step 2: Convert to fraction form
   3,105.59/4,659.34 = 1,077.15/x
3. Step 3: Cross multiply
   3,105.59x = 4,659.34 × 1,077.15
4. Step 4: Simplify right side
   3,105.59x = 5,018,779.40
5. Step 5: Solve for x
   x = 5,018,779.40/3,105.59
6. Step 6: Final answer
   x = 1,616.05