Finding the Fourth Proportional to 2,253.28, 3,109.38 and 1,258.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.28 : 3,109.38 = 1,258.51 : x
2. Step 2: Convert to fraction form
   2,253.28/3,109.38 = 1,258.51/x
3. Step 3: Cross multiply
   2,253.28x = 3,109.38 × 1,258.51
4. Step 4: Simplify right side
   2,253.28x = 3,913,185.82
5. Step 5: Solve for x
   x = 3,913,185.82/2,253.28
6. Step 6: Final answer
   x = 1,736.66