Finding the Fourth Proportional to 2,491.29, 3,739.25 and 1,259.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.29 : 3,739.25 = 1,259.57 : x
2. Step 2: Convert to fraction form
   2,491.29/3,739.25 = 1,259.57/x
3. Step 3: Cross multiply
   2,491.29x = 3,739.25 × 1,259.57
4. Step 4: Simplify right side
   2,491.29x = 4,709,847.12
5. Step 5: Solve for x
   x = 4,709,847.12/2,491.29
6. Step 6: Final answer
   x = 1,890.53