Finding the Fourth Proportional to 3,820.18, 5,730.81 and 1,222.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.18 : 5,730.81 = 1,222.51 : x
2. Step 2: Convert to fraction form
   3,820.18/5,730.81 = 1,222.51/x
3. Step 3: Cross multiply
   3,820.18x = 5,730.81 × 1,222.51
4. Step 4: Simplify right side
   3,820.18x = 7,005,972.53
5. Step 5: Solve for x
   x = 7,005,972.53/3,820.18
6. Step 6: Final answer
   x = 1,833.94