Finding the Fourth Proportional to 3,724.29, 5,139.59 and 2,045.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,724.29 : 5,139.59 = 2,045.70 : x
2. Step 2: Convert to fraction form
   3,724.29/5,139.59 = 2,045.70/x
3. Step 3: Cross multiply
   3,724.29x = 5,139.59 × 2,045.70
4. Step 4: Simplify right side
   3,724.29x = 10,514,049.03
5. Step 5: Solve for x
   x = 10,514,049.03/3,724.29
6. Step 6: Final answer
   x = 2,823.10