Finding the Fourth Proportional to 2,258.40, 3,117.55 and 1,374.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.40 : 3,117.55 = 1,374.49 : x
2. Step 2: Convert to fraction form
   2,258.40/3,117.55 = 1,374.49/x
3. Step 3: Cross multiply
   2,258.40x = 3,117.55 × 1,374.49
4. Step 4: Simplify right side
   2,258.40x = 4,285,041.30
5. Step 5: Solve for x
   x = 4,285,041.30/2,258.40
6. Step 6: Final answer
   x = 1,897.38