Finding the Fourth Proportional to 2,689.89, 4,034.94 and 742.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689.89 : 4,034.94 = 742.24 : x
2. Step 2: Convert to fraction form
   2,689.89/4,034.94 = 742.24/x
3. Step 3: Cross multiply
   2,689.89x = 4,034.94 × 742.24
4. Step 4: Simplify right side
   2,689.89x = 2,994,890.15
5. Step 5: Solve for x
   x = 2,994,890.15/2,689.89
6. Step 6: Final answer
   x = 1,113.39