Finding the Fourth Proportional to 2,174.87, 3,262.91 and 715.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,174.87 : 3,262.91 = 715.05 : x
2. Step 2: Convert to fraction form
   2,174.87/3,262.91 = 715.05/x
3. Step 3: Cross multiply
   2,174.87x = 3,262.91 × 715.05
4. Step 4: Simplify right side
   2,174.87x = 2,333,143.80
5. Step 5: Solve for x
   x = 2,333,143.80/2,174.87
6. Step 6: Final answer
   x = 1,072.77