Finding the Fourth Proportional to 3,861.02, 5,789.81 and 1,228.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,861.02 : 5,789.81 = 1,228.03 : x
2. Step 2: Convert to fraction form
   3,861.02/5,789.81 = 1,228.03/x
3. Step 3: Cross multiply
   3,861.02x = 5,789.81 × 1,228.03
4. Step 4: Simplify right side
   3,861.02x = 7,110,081.54
5. Step 5: Solve for x
   x = 7,110,081.54/3,861.02
6. Step 6: Final answer
   x = 1,841.50