Finding the Fourth Proportional to 2,054.34, 3,082.78 and 958.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.34 : 3,082.78 = 958.80 : x
2. Step 2: Convert to fraction form
   2,054.34/3,082.78 = 958.80/x
3. Step 3: Cross multiply
   2,054.34x = 3,082.78 × 958.80
4. Step 4: Simplify right side
   2,054.34x = 2,955,769.46
5. Step 5: Solve for x
   x = 2,955,769.46/2,054.34
6. Step 6: Final answer
   x = 1,438.79