Finding the Fourth Proportional to 2,258.73, 3,386.30 and 1,089.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.73 : 3,386.30 = 1,089.09 : x
2. Step 2: Convert to fraction form
   2,258.73/3,386.30 = 1,089.09/x
3. Step 3: Cross multiply
   2,258.73x = 3,386.30 × 1,089.09
4. Step 4: Simplify right side
   2,258.73x = 3,687,980.02
5. Step 5: Solve for x
   x = 3,687,980.02/2,258.73
6. Step 6: Final answer
   x = 1,632.77