Finding the Fourth Proportional to 1,429.74, 1,970.68 and 957.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.74 : 1,970.68 = 957.47 : x
2. Step 2: Convert to fraction form
   1,429.74/1,970.68 = 957.47/x
3. Step 3: Cross multiply
   1,429.74x = 1,970.68 × 957.47
4. Step 4: Simplify right side
   1,429.74x = 1,886,866.98
5. Step 5: Solve for x
   x = 1,886,866.98/1,429.74
6. Step 6: Final answer
   x = 1,319.73