Finding the Fourth Proportional to 2,258.91, 3,388.29 and 1,089.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.91 : 3,388.29 = 1,089.00 : x
2. Step 2: Convert to fraction form
   2,258.91/3,388.29 = 1,089.00/x
3. Step 3: Cross multiply
   2,258.91x = 3,388.29 × 1,089.00
4. Step 4: Simplify right side
   2,258.91x = 3,689,830.87
5. Step 5: Solve for x
   x = 3,689,830.87/2,258.91
6. Step 6: Final answer
   x = 1,633.46