Finding the Fourth Proportional to 2,662.61, 3,993.57 and 714.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.61 : 3,993.57 = 714.96 : x
2. Step 2: Convert to fraction form
   2,662.61/3,993.57 = 714.96/x
3. Step 3: Cross multiply
   2,662.61x = 3,993.57 × 714.96
4. Step 4: Simplify right side
   2,662.61x = 2,855,242.81
5. Step 5: Solve for x
   x = 2,855,242.81/2,662.61
6. Step 6: Final answer
   x = 1,072.35