Finding the Fourth Proportional to 2,558.33, 3,531.42 and 1,996.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.33 : 3,531.42 = 1,996.55 : x
2. Step 2: Convert to fraction form
   2,558.33/3,531.42 = 1,996.55/x
3. Step 3: Cross multiply
   2,558.33x = 3,531.42 × 1,996.55
4. Step 4: Simplify right side
   2,558.33x = 7,050,638.94
5. Step 5: Solve for x
   x = 7,050,638.94/2,558.33
6. Step 6: Final answer
   x = 2,755.96