Finding the Fourth Proportional to 3,724.42, 5,139.50 and 2,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,724.42 : 5,139.50 = 2,045.50 : x
2. Step 2: Convert to fraction form
   3,724.42/5,139.50 = 2,045.50/x
3. Step 3: Cross multiply
   3,724.42x = 5,139.50 × 2,045.50
4. Step 4: Simplify right side
   3,724.42x = 10,512,847.25
5. Step 5: Solve for x
   x = 10,512,847.25/3,724.42
6. Step 6: Final answer
   x = 2,822.68