Finding the Fourth Proportional to 1,742.56, 2,404.72 and 956.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.56 : 2,404.72 = 956.61 : x
2. Step 2: Convert to fraction form
   1,742.56/2,404.72 = 956.61/x
3. Step 3: Cross multiply
   1,742.56x = 2,404.72 × 956.61
4. Step 4: Simplify right side
   1,742.56x = 2,300,380.39
5. Step 5: Solve for x
   x = 2,300,380.39/1,742.56
6. Step 6: Final answer
   x = 1,320.11