Finding the Fourth Proportional to 1,320.96, 1,979.52 and 956.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.96 : 1,979.52 = 956.52 : x
2. Step 2: Convert to fraction form
   1,320.96/1,979.52 = 956.52/x
3. Step 3: Cross multiply
   1,320.96x = 1,979.52 × 956.52
4. Step 4: Simplify right side
   1,320.96x = 1,893,450.47
5. Step 5: Solve for x
   x = 1,893,450.47/1,320.96
6. Step 6: Final answer
   x = 1,433.39