Finding the Fourth Proportional to 2,258.42, 3,387.60 and 1,162.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.42 : 3,387.60 = 1,162.20 : x
2. Step 2: Convert to fraction form
   2,258.42/3,387.60 = 1,162.20/x
3. Step 3: Cross multiply
   2,258.42x = 3,387.60 × 1,162.20
4. Step 4: Simplify right side
   2,258.42x = 3,937,068.72
5. Step 5: Solve for x
   x = 3,937,068.72/2,258.42
6. Step 6: Final answer
   x = 1,743.28