Finding the Fourth Proportional to 3,819.72, 5,730.24 and 1,222.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,819.72 : 5,730.24 = 1,222.50 : x
2. Step 2: Convert to fraction form
   3,819.72/5,730.24 = 1,222.50/x
3. Step 3: Cross multiply
   3,819.72x = 5,730.24 × 1,222.50
4. Step 4: Simplify right side
   3,819.72x = 7,005,218.40
5. Step 5: Solve for x
   x = 7,005,218.40/3,819.72
6. Step 6: Final answer
   x = 1,833.96