Finding the Fourth Proportional to 2,258.68, 3,116.99 and 1,315.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.68 : 3,116.99 = 1,315.03 : x
2. Step 2: Convert to fraction form
   2,258.68/3,116.99 = 1,315.03/x
3. Step 3: Cross multiply
   2,258.68x = 3,116.99 × 1,315.03
4. Step 4: Simplify right side
   2,258.68x = 4,098,928.78
5. Step 5: Solve for x
   x = 4,098,928.78/2,258.68
6. Step 6: Final answer
   x = 1,814.75