Finding the Fourth Proportional to 2,128.32, 3,193.46 and 957.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.32 : 3,193.46 = 957.69 : x
2. Step 2: Convert to fraction form
   2,128.32/3,193.46 = 957.69/x
3. Step 3: Cross multiply
   2,128.32x = 3,193.46 × 957.69
4. Step 4: Simplify right side
   2,128.32x = 3,058,343.51
5. Step 5: Solve for x
   x = 3,058,343.51/2,128.32
6. Step 6: Final answer
   x = 1,436.98