Finding the Fourth Proportional to 2,358.69, 3,538.61 and 715.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,358.69 : 3,538.61 = 715.14 : x
2. Step 2: Convert to fraction form
   2,358.69/3,538.61 = 715.14/x
3. Step 3: Cross multiply
   2,358.69x = 3,538.61 × 715.14
4. Step 4: Simplify right side
   2,358.69x = 2,530,597.98
5. Step 5: Solve for x
   x = 2,530,597.98/2,358.69
6. Step 6: Final answer
   x = 1,072.88