Finding the Fourth Proportional to 1,997.28, 2,994.72 and 957.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.28 : 2,994.72 = 957.60 : x
2. Step 2: Convert to fraction form
   1,997.28/2,994.72 = 957.60/x
3. Step 3: Cross multiply
   1,997.28x = 2,994.72 × 957.60
4. Step 4: Simplify right side
   1,997.28x = 2,867,743.87
5. Step 5: Solve for x
   x = 2,867,743.87/1,997.28
6. Step 6: Final answer
   x = 1,435.82