Finding the Fourth Proportional to 3,880.59, 5,820.72 and 958.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,880.59 : 5,820.72 = 958.82 : x
2. Step 2: Convert to fraction form
   3,880.59/5,820.72 = 958.82/x
3. Step 3: Cross multiply
   3,880.59x = 5,820.72 × 958.82
4. Step 4: Simplify right side
   3,880.59x = 5,581,022.75
5. Step 5: Solve for x
   x = 5,581,022.75/3,880.59
6. Step 6: Final answer
   x = 1,438.19