Finding the Fourth Proportional to 3,820.16, 5,728.98 and 1,222.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.16 : 5,728.98 = 1,222.46 : x
2. Step 2: Convert to fraction form
   3,820.16/5,728.98 = 1,222.46/x
3. Step 3: Cross multiply
   3,820.16x = 5,728.98 × 1,222.46
4. Step 4: Simplify right side
   3,820.16x = 7,003,448.89
5. Step 5: Solve for x
   x = 7,003,448.89/3,820.16
6. Step 6: Final answer
   x = 1,833.29