Finding the Fourth Proportional to 2,258.91, 3,390.59 and 1,674.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.91 : 3,390.59 = 1,674.70 : x
2. Step 2: Convert to fraction form
   2,258.91/3,390.59 = 1,674.70/x
3. Step 3: Cross multiply
   2,258.91x = 3,390.59 × 1,674.70
4. Step 4: Simplify right side
   2,258.91x = 5,678,216.78
5. Step 5: Solve for x
   x = 5,678,216.78/2,258.91
6. Step 6: Final answer
   x = 2,513.70