Finding the Fourth Proportional to 2,189.29, 3,284.54 and 956.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.29 : 3,284.54 = 956.81 : x
2. Step 2: Convert to fraction form
   2,189.29/3,284.54 = 956.81/x
3. Step 3: Cross multiply
   2,189.29x = 3,284.54 × 956.81
4. Step 4: Simplify right side
   2,189.29x = 3,142,680.72
5. Step 5: Solve for x
   x = 3,142,680.72/2,189.29
6. Step 6: Final answer
   x = 1,435.48