Finding the Fourth Proportional to 2,415.86, 3,622.42 and 2,209.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.86 : 3,622.42 = 2,209.46 : x
2. Step 2: Convert to fraction form
   2,415.86/3,622.42 = 2,209.46/x
3. Step 3: Cross multiply
   2,415.86x = 3,622.42 × 2,209.46
4. Step 4: Simplify right side
   2,415.86x = 8,003,592.09
5. Step 5: Solve for x
   x = 8,003,592.09/2,415.86
6. Step 6: Final answer
   x = 3,312.94