Finding the Fourth Proportional to 2,562.58, 3,843.45 and 918.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,562.58 : 3,843.45 = 918.82 : x
2. Step 2: Convert to fraction form
   2,562.58/3,843.45 = 918.82/x
3. Step 3: Cross multiply
   2,562.58x = 3,843.45 × 918.82
4. Step 4: Simplify right side
   2,562.58x = 3,531,438.73
5. Step 5: Solve for x
   x = 3,531,438.73/2,562.58
6. Step 6: Final answer
   x = 1,378.08