Finding the Fourth Proportional to 3,819.02, 5,724.88 and 2,428.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,819.02 : 5,724.88 = 2,428.05 : x
2. Step 2: Convert to fraction form
   3,819.02/5,724.88 = 2,428.05/x
3. Step 3: Cross multiply
   3,819.02x = 5,724.88 × 2,428.05
4. Step 4: Simplify right side
   3,819.02x = 13,900,294.88
5. Step 5: Solve for x
   x = 13,900,294.88/3,819.02
6. Step 6: Final answer
   x = 3,639.75