Finding the Fourth Proportional to 1,424.16, 2,137.61 and 694.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.16 : 2,137.61 = 694.25 : x
2. Step 2: Convert to fraction form
   1,424.16/2,137.61 = 694.25/x
3. Step 3: Cross multiply
   1,424.16x = 2,137.61 × 694.25
4. Step 4: Simplify right side
   1,424.16x = 1,484,040.82
5. Step 5: Solve for x
   x = 1,484,040.82/1,424.16
6. Step 6: Final answer
   x = 1,042.04