Finding the Fourth Proportional to 1,429.57, 2,144.63 and 699.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.57 : 2,144.63 = 699.09 : x
2. Step 2: Convert to fraction form
   1,429.57/2,144.63 = 699.09/x
3. Step 3: Cross multiply
   1,429.57x = 2,144.63 × 699.09
4. Step 4: Simplify right side
   1,429.57x = 1,499,289.39
5. Step 5: Solve for x
   x = 1,499,289.39/1,429.57
6. Step 6: Final answer
   x = 1,048.77