Finding the Fourth Proportional to 2,662.84, 3,994.53 and 715.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.84 : 3,994.53 = 715.24 : x
2. Step 2: Convert to fraction form
   2,662.84/3,994.53 = 715.24/x
3. Step 3: Cross multiply
   2,662.84x = 3,994.53 × 715.24
4. Step 4: Simplify right side
   2,662.84x = 2,857,047.64
5. Step 5: Solve for x
   x = 2,857,047.64/2,662.84
6. Step 6: Final answer
   x = 1,072.93