Finding the Fourth Proportional to 2,321.94, 3,481.89 and 1,089.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.94 : 3,481.89 = 1,089.70 : x
2. Step 2: Convert to fraction form
   2,321.94/3,481.89 = 1,089.70/x
3. Step 3: Cross multiply
   2,321.94x = 3,481.89 × 1,089.70
4. Step 4: Simplify right side
   2,321.94x = 3,794,222.33
5. Step 5: Solve for x
   x = 3,794,222.33/2,321.94
6. Step 6: Final answer
   x = 1,634.07