Finding the Fourth Proportional to 1,742.25, 2,404.31 and 956.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.25 : 2,404.31 = 956.30 : x
2. Step 2: Convert to fraction form
   1,742.25/2,404.31 = 956.30/x
3. Step 3: Cross multiply
   1,742.25x = 2,404.31 × 956.30
4. Step 4: Simplify right side
   1,742.25x = 2,299,234.30
5. Step 5: Solve for x
   x = 2,299,234.30/1,742.25
6. Step 6: Final answer
   x = 1,319.69