Finding the Fourth Proportional to 3,558.67, 4,910.43 and 2,231.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,558.67 : 4,910.43 = 2,231.89 : x
2. Step 2: Convert to fraction form
   3,558.67/4,910.43 = 2,231.89/x
3. Step 3: Cross multiply
   3,558.67x = 4,910.43 × 2,231.89
4. Step 4: Simplify right side
   3,558.67x = 10,959,539.61
5. Step 5: Solve for x
   x = 10,959,539.61/3,558.67
6. Step 6: Final answer
   x = 3,079.67