Finding the Fourth Proportional to 2,213.86, 3,055.06 and 1,205.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.86 : 3,055.06 = 1,205.52 : x
2. Step 2: Convert to fraction form
   2,213.86/3,055.06 = 1,205.52/x
3. Step 3: Cross multiply
   2,213.86x = 3,055.06 × 1,205.52
4. Step 4: Simplify right side
   2,213.86x = 3,682,935.93
5. Step 5: Solve for x
   x = 3,682,935.93/2,213.86
6. Step 6: Final answer
   x = 1,663.58