Finding the Fourth Proportional to 2,868.73, 4,303.31 and 920.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.73 : 4,303.31 = 920.82 : x
2. Step 2: Convert to fraction form
   2,868.73/4,303.31 = 920.82/x
3. Step 3: Cross multiply
   2,868.73x = 4,303.31 × 920.82
4. Step 4: Simplify right side
   2,868.73x = 3,962,573.91
5. Step 5: Solve for x
   x = 3,962,573.91/2,868.73
6. Step 6: Final answer
   x = 1,381.30