Finding the Fourth Proportional to 3,321.25, 4,978.53 and 2,089.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,321.25 : 4,978.53 = 2,089.54 : x
2. Step 2: Convert to fraction form
   3,321.25/4,978.53 = 2,089.54/x
3. Step 3: Cross multiply
   3,321.25x = 4,978.53 × 2,089.54
4. Step 4: Simplify right side
   3,321.25x = 10,402,837.58
5. Step 5: Solve for x
   x = 10,402,837.58/3,321.25
6. Step 6: Final answer
   x = 3,132.21