Finding the Fourth Proportional to 3,855.18, 5,783.61 and 1,222.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855.18 : 5,783.61 = 1,222.83 : x
2. Step 2: Convert to fraction form
   3,855.18/5,783.61 = 1,222.83/x
3. Step 3: Cross multiply
   3,855.18x = 5,783.61 × 1,222.83
4. Step 4: Simplify right side
   3,855.18x = 7,072,371.82
5. Step 5: Solve for x
   x = 7,072,371.82/3,855.18
6. Step 6: Final answer
   x = 1,834.51