Finding the Fourth Proportional to 2,089.37, 2,882.31 and 1,620.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.37 : 2,882.31 = 1,620.38 : x
2. Step 2: Convert to fraction form
   2,089.37/2,882.31 = 1,620.38/x
3. Step 3: Cross multiply
   2,089.37x = 2,882.31 × 1,620.38
4. Step 4: Simplify right side
   2,089.37x = 4,670,437.48
5. Step 5: Solve for x
   x = 4,670,437.48/2,089.37
6. Step 6: Final answer
   x = 2,235.33