Finding the Fourth Proportional to 3,606.86, 4,977.81 and 2,190.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,606.86 : 4,977.81 = 2,190.22 : x
2. Step 2: Convert to fraction form
   3,606.86/4,977.81 = 2,190.22/x
3. Step 3: Cross multiply
   3,606.86x = 4,977.81 × 2,190.22
4. Step 4: Simplify right side
   3,606.86x = 10,902,499.02
5. Step 5: Solve for x
   x = 10,902,499.02/3,606.86
6. Step 6: Final answer
   x = 3,022.71