Finding the Fourth Proportional to 2,958.58, 4,411.54 and 2,830.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,958.58 : 4,411.54 = 2,830.09 : x
2. Step 2: Convert to fraction form
   2,958.58/4,411.54 = 2,830.09/x
3. Step 3: Cross multiply
   2,958.58x = 4,411.54 × 2,830.09
4. Step 4: Simplify right side
   2,958.58x = 12,485,055.24
5. Step 5: Solve for x
   x = 12,485,055.24/2,958.58
6. Step 6: Final answer
   x = 4,219.95