Finding the Fourth Proportional to 3,109.10, 4,662.19 and 1,258.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.10 : 4,662.19 = 1,258.81 : x
2. Step 2: Convert to fraction form
   3,109.10/4,662.19 = 1,258.81/x
3. Step 3: Cross multiply
   3,109.10x = 4,662.19 × 1,258.81
4. Step 4: Simplify right side
   3,109.10x = 5,868,818.80
5. Step 5: Solve for x
   x = 5,868,818.80/3,109.10
6. Step 6: Final answer
   x = 1,887.62