Finding the Fourth Proportional to 2,958.54, 4,080.15 and 1,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,958.54 : 4,080.15 = 1,909.50 : x
2. Step 2: Convert to fraction form
   2,958.54/4,080.15 = 1,909.50/x
3. Step 3: Cross multiply
   2,958.54x = 4,080.15 × 1,909.50
4. Step 4: Simplify right side
   2,958.54x = 7,791,046.43
5. Step 5: Solve for x
   x = 7,791,046.43/2,958.54
6. Step 6: Final answer
   x = 2,633.41