Finding the Fourth Proportional to 1,429.16, 2,142.71 and 965.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.16 : 2,142.71 = 965.79 : x
2. Step 2: Convert to fraction form
   1,429.16/2,142.71 = 965.79/x
3. Step 3: Cross multiply
   1,429.16x = 2,142.71 × 965.79
4. Step 4: Simplify right side
   1,429.16x = 2,069,407.89
5. Step 5: Solve for x
   x = 2,069,407.89/1,429.16
6. Step 6: Final answer
   x = 1,447.99