Finding the Fourth Proportional to 1,742.69, 2,404.77 and 956.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.69 : 2,404.77 = 956.78 : x
2. Step 2: Convert to fraction form
   1,742.69/2,404.77 = 956.78/x
3. Step 3: Cross multiply
   1,742.69x = 2,404.77 × 956.78
4. Step 4: Simplify right side
   1,742.69x = 2,300,823.82
5. Step 5: Solve for x
   x = 2,300,823.82/1,742.69
6. Step 6: Final answer
   x = 1,320.28