Finding the Fourth Proportional to 3,109.42, 4,662.98 and 1,260.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.42 : 4,662.98 = 1,260.05 : x
2. Step 2: Convert to fraction form
   3,109.42/4,662.98 = 1,260.05/x
3. Step 3: Cross multiply
   3,109.42x = 4,662.98 × 1,260.05
4. Step 4: Simplify right side
   3,109.42x = 5,875,581.65
5. Step 5: Solve for x
   x = 5,875,581.65/3,109.42
6. Step 6: Final answer
   x = 1,889.61