Finding the Fourth Proportional to 3,321.26, 4,978.52 and 2,089.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,321.26 : 4,978.52 = 2,089.54 : x
2. Step 2: Convert to fraction form
   3,321.26/4,978.52 = 2,089.54/x
3. Step 3: Cross multiply
   3,321.26x = 4,978.52 × 2,089.54
4. Step 4: Simplify right side
   3,321.26x = 10,402,816.68
5. Step 5: Solve for x
   x = 10,402,816.68/3,321.26
6. Step 6: Final answer
   x = 3,132.19