Finding the Fourth Proportional to 2,361.26, 3,258.72 and 1,313.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,361.26 : 3,258.72 = 1,313.40 : x
2. Step 2: Convert to fraction form
   2,361.26/3,258.72 = 1,313.40/x
3. Step 3: Cross multiply
   2,361.26x = 3,258.72 × 1,313.40
4. Step 4: Simplify right side
   2,361.26x = 4,280,002.85
5. Step 5: Solve for x
   x = 4,280,002.85/2,361.26
6. Step 6: Final answer
   x = 1,812.59