Finding the Fourth Proportional to 2,258.72, 3,388.30 and 1,026.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.72 : 3,388.30 = 1,026.72 : x
2. Step 2: Convert to fraction form
   2,258.72/3,388.30 = 1,026.72/x
3. Step 3: Cross multiply
   2,258.72x = 3,388.30 × 1,026.72
4. Step 4: Simplify right side
   2,258.72x = 3,478,835.38
5. Step 5: Solve for x
   x = 3,478,835.38/2,258.72
6. Step 6: Final answer
   x = 1,540.18