Finding the Fourth Proportional to 3,718.38, 5,131.25 and 2,039.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,718.38 : 5,131.25 = 2,039.77 : x
2. Step 2: Convert to fraction form
   3,718.38/5,131.25 = 2,039.77/x
3. Step 3: Cross multiply
   3,718.38x = 5,131.25 × 2,039.77
4. Step 4: Simplify right side
   3,718.38x = 10,466,569.81
5. Step 5: Solve for x
   x = 10,466,569.81/3,718.38
6. Step 6: Final answer
   x = 2,814.82