Finding the Fourth Proportional to 2,039.08, 3,057.98 and 1,309.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.08 : 3,057.98 = 1,309.48 : x
2. Step 2: Convert to fraction form
   2,039.08/3,057.98 = 1,309.48/x
3. Step 3: Cross multiply
   2,039.08x = 3,057.98 × 1,309.48
4. Step 4: Simplify right side
   2,039.08x = 4,004,363.65
5. Step 5: Solve for x
   x = 4,004,363.65/2,039.08
6. Step 6: Final answer
   x = 1,963.81