Finding the Fourth Proportional to 1,425.43, 2,137.33 and 694.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.43 : 2,137.33 = 694.09 : x
2. Step 2: Convert to fraction form
   1,425.43/2,137.33 = 694.09/x
3. Step 3: Cross multiply
   1,425.43x = 2,137.33 × 694.09
4. Step 4: Simplify right side
   1,425.43x = 1,483,499.38
5. Step 5: Solve for x
   x = 1,483,499.38/1,425.43
6. Step 6: Final answer
   x = 1,040.74