Finding the Fourth Proportional to 3,907.17, 5,862.12 and 1,715.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,907.17 : 5,862.12 = 1,715.61 : x
2. Step 2: Convert to fraction form
   3,907.17/5,862.12 = 1,715.61/x
3. Step 3: Cross multiply
   3,907.17x = 5,862.12 × 1,715.61
4. Step 4: Simplify right side
   3,907.17x = 10,057,111.69
5. Step 5: Solve for x
   x = 10,057,111.69/3,907.17
6. Step 6: Final answer
   x = 2,574.01