Finding the Fourth Proportional to 3,415.41, 4,710.15 and 2,155.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,415.41 : 4,710.15 = 2,155.05 : x
2. Step 2: Convert to fraction form
   3,415.41/4,710.15 = 2,155.05/x
3. Step 3: Cross multiply
   3,415.41x = 4,710.15 × 2,155.05
4. Step 4: Simplify right side
   3,415.41x = 10,150,608.76
5. Step 5: Solve for x
   x = 10,150,608.76/3,415.41
6. Step 6: Final answer
   x = 2,972.00