Finding the Fourth Proportional to 2,213.54, 3,054.55 and 1,218.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.54 : 3,054.55 = 1,218.82 : x
2. Step 2: Convert to fraction form
   2,213.54/3,054.55 = 1,218.82/x
3. Step 3: Cross multiply
   2,213.54x = 3,054.55 × 1,218.82
4. Step 4: Simplify right side
   2,213.54x = 3,722,946.63
5. Step 5: Solve for x
   x = 3,722,946.63/2,213.54
6. Step 6: Final answer
   x = 1,681.90