Finding the Fourth Proportional to 1,742.57, 2,404.71 and 956.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.57 : 2,404.71 = 956.60 : x
2. Step 2: Convert to fraction form
   1,742.57/2,404.71 = 956.60/x
3. Step 3: Cross multiply
   1,742.57x = 2,404.71 × 956.60
4. Step 4: Simplify right side
   1,742.57x = 2,300,345.59
5. Step 5: Solve for x
   x = 2,300,345.59/1,742.57
6. Step 6: Final answer
   x = 1,320.09