Finding the Fourth Proportional to 1,049.31, 1,572.42 and 957.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.31 : 1,572.42 = 957.12 : x
2. Step 2: Convert to fraction form
   1,049.31/1,572.42 = 957.12/x
3. Step 3: Cross multiply
   1,049.31x = 1,572.42 × 957.12
4. Step 4: Simplify right side
   1,049.31x = 1,504,994.63
5. Step 5: Solve for x
   x = 1,504,994.63/1,049.31
6. Step 6: Final answer
   x = 1,434.27