Finding the Fourth Proportional to 3,109.50, 4,662.36 and 1,259.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.50 : 4,662.36 = 1,259.10 : x
2. Step 2: Convert to fraction form
   3,109.50/4,662.36 = 1,259.10/x
3. Step 3: Cross multiply
   3,109.50x = 4,662.36 × 1,259.10
4. Step 4: Simplify right side
   3,109.50x = 5,870,377.48
5. Step 5: Solve for x
   x = 5,870,377.48/3,109.50
6. Step 6: Final answer
   x = 1,887.88