Finding the Fourth Proportional to 1,429.85, 2,143.31 and 910.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.85 : 2,143.31 = 910.24 : x
2. Step 2: Convert to fraction form
   1,429.85/2,143.31 = 910.24/x
3. Step 3: Cross multiply
   1,429.85x = 2,143.31 × 910.24
4. Step 4: Simplify right side
   1,429.85x = 1,950,926.49
5. Step 5: Solve for x
   x = 1,950,926.49/1,429.85
6. Step 6: Final answer
   x = 1,364.43