Finding the Fourth Proportional to 1,429.59, 1,972.62 and 956.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.59 : 1,972.62 = 956.73 : x
2. Step 2: Convert to fraction form
   1,429.59/1,972.62 = 956.73/x
3. Step 3: Cross multiply
   1,429.59x = 1,972.62 × 956.73
4. Step 4: Simplify right side
   1,429.59x = 1,887,264.73
5. Step 5: Solve for x
   x = 1,887,264.73/1,429.59
6. Step 6: Final answer
   x = 1,320.14