Finding the Fourth Proportional to 2,216.11, 3,055.39 and 1,816.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.11 : 3,055.39 = 1,816.30 : x
2. Step 2: Convert to fraction form
   2,216.11/3,055.39 = 1,816.30/x
3. Step 3: Cross multiply
   2,216.11x = 3,055.39 × 1,816.30
4. Step 4: Simplify right side
   2,216.11x = 5,549,480.50
5. Step 5: Solve for x
   x = 5,549,480.50/2,216.11
6. Step 6: Final answer
   x = 2,504.16