Finding the Fourth Proportional to 3,821.18, 5,730.42 and 1,223.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,821.18 : 5,730.42 = 1,223.42 : x
2. Step 2: Convert to fraction form
   3,821.18/5,730.42 = 1,223.42/x
3. Step 3: Cross multiply
   3,821.18x = 5,730.42 × 1,223.42
4. Step 4: Simplify right side
   3,821.18x = 7,010,710.44
5. Step 5: Solve for x
   x = 7,010,710.44/3,821.18
6. Step 6: Final answer
   x = 1,834.70