Finding the Fourth Proportional to 2,976.90, 4,104.63 and 2,415.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,976.90 : 4,104.63 = 2,415.61 : x
2. Step 2: Convert to fraction form
   2,976.90/4,104.63 = 2,415.61/x
3. Step 3: Cross multiply
   2,976.90x = 4,104.63 × 2,415.61
4. Step 4: Simplify right side
   2,976.90x = 9,915,185.27
5. Step 5: Solve for x
   x = 9,915,185.27/2,976.90
6. Step 6: Final answer
   x = 3,330.71