Finding the Fourth Proportional to 2,258.70, 3,155.70 and 2,258.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.70 : 3,155.70 = 2,258.70 : x
2. Step 2: Convert to fraction form
   2,258.70/3,155.70 = 2,258.70/x
3. Step 3: Cross multiply
   2,258.70x = 3,155.70 × 2,258.70
4. Step 4: Simplify right side
   2,258.70x = 7,127,779.59
5. Step 5: Solve for x
   x = 7,127,779.59/2,258.70
6. Step 6: Final answer
   x = 3,155.70