Finding the Fourth Proportional to 1,744.70, 2,407.72 and 958.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,744.70 : 2,407.72 = 958.78 : x
2. Step 2: Convert to fraction form
   1,744.70/2,407.72 = 958.78/x
3. Step 3: Cross multiply
   1,744.70x = 2,407.72 × 958.78
4. Step 4: Simplify right side
   1,744.70x = 2,308,473.78
5. Step 5: Solve for x
   x = 2,308,473.78/1,744.70
6. Step 6: Final answer
   x = 1,323.14