Finding the Fourth Proportional to 2,563.01, 3,842.10 and 1,391.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,563.01 : 3,842.10 = 1,391.30 : x
2. Step 2: Convert to fraction form
   2,563.01/3,842.10 = 1,391.30/x
3. Step 3: Cross multiply
   2,563.01x = 3,842.10 × 1,391.30
4. Step 4: Simplify right side
   2,563.01x = 5,345,494.52
5. Step 5: Solve for x
   x = 5,345,494.52/2,563.01
6. Step 6: Final answer
   x = 2,085.64