Finding the Fourth Proportional to 1,429.53, 2,142.27 and 699.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.53 : 2,142.27 = 699.62 : x
2. Step 2: Convert to fraction form
   1,429.53/2,142.27 = 699.62/x
3. Step 3: Cross multiply
   1,429.53x = 2,142.27 × 699.62
4. Step 4: Simplify right side
   1,429.53x = 1,498,764.23
5. Step 5: Solve for x
   x = 1,498,764.23/1,429.53
6. Step 6: Final answer
   x = 1,048.43