Finding the Fourth Proportional to 2,663.24, 3,994.59 and 715.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.24 : 3,994.59 = 715.19 : x
2. Step 2: Convert to fraction form
   2,663.24/3,994.59 = 715.19/x
3. Step 3: Cross multiply
   2,663.24x = 3,994.59 × 715.19
4. Step 4: Simplify right side
   2,663.24x = 2,856,890.82
5. Step 5: Solve for x
   x = 2,856,890.82/2,663.24
6. Step 6: Final answer
   x = 1,072.71