Finding the Fourth Proportional to 3,718.56, 5,131.56 and 2,039.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,718.56 : 5,131.56 = 2,039.98 : x
2. Step 2: Convert to fraction form
   3,718.56/5,131.56 = 2,039.98/x
3. Step 3: Cross multiply
   3,718.56x = 5,131.56 × 2,039.98
4. Step 4: Simplify right side
   3,718.56x = 10,468,264.97
5. Step 5: Solve for x
   x = 10,468,264.97/3,718.56
6. Step 6: Final answer
   x = 2,815.14