Finding the Fourth Proportional to 2,087.38, 3,128.37 and 1,563.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.38 : 3,128.37 = 1,563.26 : x
2. Step 2: Convert to fraction form
   2,087.38/3,128.37 = 1,563.26/x
3. Step 3: Cross multiply
   2,087.38x = 3,128.37 × 1,563.26
4. Step 4: Simplify right side
   2,087.38x = 4,890,455.69
5. Step 5: Solve for x
   x = 4,890,455.69/2,087.38
6. Step 6: Final answer
   x = 2,342.87