Finding the Fourth Proportional to 1,429.02, 2,144.34 and 813.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.02 : 2,144.34 = 813.42 : x
2. Step 2: Convert to fraction form
   1,429.02/2,144.34 = 813.42/x
3. Step 3: Cross multiply
   1,429.02x = 2,144.34 × 813.42
4. Step 4: Simplify right side
   1,429.02x = 1,744,249.04
5. Step 5: Solve for x
   x = 1,744,249.04/1,429.02
6. Step 6: Final answer
   x = 1,220.59