Finding the Fourth Proportional to 2,253.42, 3,109.28 and 1,258.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.42 : 3,109.28 = 1,258.58 : x
2. Step 2: Convert to fraction form
   2,253.42/3,109.28 = 1,258.58/x
3. Step 3: Cross multiply
   2,253.42x = 3,109.28 × 1,258.58
4. Step 4: Simplify right side
   2,253.42x = 3,913,255.78
5. Step 5: Solve for x
   x = 3,913,255.78/2,253.42
6. Step 6: Final answer
   x = 1,736.59