Finding the Fourth Proportional to 1,958.79, 2,939.34 and 727.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,958.79 : 2,939.34 = 727.07 : x
2. Step 2: Convert to fraction form
   1,958.79/2,939.34 = 727.07/x
3. Step 3: Cross multiply
   1,958.79x = 2,939.34 × 727.07
4. Step 4: Simplify right side
   1,958.79x = 2,137,091.24
5. Step 5: Solve for x
   x = 2,137,091.24/1,958.79
6. Step 6: Final answer
   x = 1,091.03