Finding the Fourth Proportional to 2,258.10, 3,116.52 and 1,313.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.10 : 3,116.52 = 1,313.91 : x
2. Step 2: Convert to fraction form
   2,258.10/3,116.52 = 1,313.91/x
3. Step 3: Cross multiply
   2,258.10x = 3,116.52 × 1,313.91
4. Step 4: Simplify right side
   2,258.10x = 4,094,826.79
5. Step 5: Solve for x
   x = 4,094,826.79/2,258.10
6. Step 6: Final answer
   x = 1,813.39