Finding the Fourth Proportional to 2,253.45, 3,109.78 and 1,258.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.45 : 3,109.78 = 1,258.82 : x
2. Step 2: Convert to fraction form
   2,253.45/3,109.78 = 1,258.82/x
3. Step 3: Cross multiply
   2,253.45x = 3,109.78 × 1,258.82
4. Step 4: Simplify right side
   2,253.45x = 3,914,653.26
5. Step 5: Solve for x
   x = 3,914,653.26/2,253.45
6. Step 6: Final answer
   x = 1,737.18