Finding the Fourth Proportional to 3,080.23, 4,619.16 and 1,105.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,080.23 : 4,619.16 = 1,105.31 : x
2. Step 2: Convert to fraction form
   3,080.23/4,619.16 = 1,105.31/x
3. Step 3: Cross multiply
   3,080.23x = 4,619.16 × 1,105.31
4. Step 4: Simplify right side
   3,080.23x = 5,105,615.29
5. Step 5: Solve for x
   x = 5,105,615.29/3,080.23
6. Step 6: Final answer
   x = 1,657.54