Finding the Fourth Proportional to 2,253.16, 3,109.32 and 1,258.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.16 : 3,109.32 = 1,258.42 : x
2. Step 2: Convert to fraction form
   2,253.16/3,109.32 = 1,258.42/x
3. Step 3: Cross multiply
   2,253.16x = 3,109.32 × 1,258.42
4. Step 4: Simplify right side
   2,253.16x = 3,912,830.47
5. Step 5: Solve for x
   x = 3,912,830.47/2,253.16
6. Step 6: Final answer
   x = 1,736.60