Finding the Fourth Proportional to 3,820.05, 5,730.18 and 1,818.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.05 : 5,730.18 = 1,818.30 : x
2. Step 2: Convert to fraction form
   3,820.05/5,730.18 = 1,818.30/x
3. Step 3: Cross multiply
   3,820.05x = 5,730.18 × 1,818.30
4. Step 4: Simplify right side
   3,820.05x = 10,419,186.29
5. Step 5: Solve for x
   x = 10,419,186.29/3,820.05
6. Step 6: Final answer
   x = 2,727.50