Finding the Fourth Proportional to 1,429.21, 2,141.61 and 965.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.21 : 2,141.61 = 965.17 : x
2. Step 2: Convert to fraction form
   1,429.21/2,141.61 = 965.17/x
3. Step 3: Cross multiply
   1,429.21x = 2,141.61 × 965.17
4. Step 4: Simplify right side
   1,429.21x = 2,067,017.72
5. Step 5: Solve for x
   x = 2,067,017.72/1,429.21
6. Step 6: Final answer
   x = 1,446.27