Finding the Fourth Proportional to 2,631.31, 3,943.82 and 1,223.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.31 : 3,943.82 = 1,223.82 : x
2. Step 2: Convert to fraction form
   2,631.31/3,943.82 = 1,223.82/x
3. Step 3: Cross multiply
   2,631.31x = 3,943.82 × 1,223.82
4. Step 4: Simplify right side
   2,631.31x = 4,826,519.67
5. Step 5: Solve for x
   x = 4,826,519.67/2,631.31
6. Step 6: Final answer
   x = 1,834.27