Finding the Fourth Proportional to 1,681.50, 2,522.61 and 708.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681.50 : 2,522.61 = 708.42 : x
2. Step 2: Convert to fraction form
   1,681.50/2,522.61 = 708.42/x
3. Step 3: Cross multiply
   1,681.50x = 2,522.61 × 708.42
4. Step 4: Simplify right side
   1,681.50x = 1,787,067.38
5. Step 5: Solve for x
   x = 1,787,067.38/1,681.50
6. Step 6: Final answer
   x = 1,062.78