Finding the Fourth Proportional to 2,212.84, 3,053.72 and 1,218.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.84 : 3,053.72 = 1,218.14 : x
2. Step 2: Convert to fraction form
   2,212.84/3,053.72 = 1,218.14/x
3. Step 3: Cross multiply
   2,212.84x = 3,053.72 × 1,218.14
4. Step 4: Simplify right side
   2,212.84x = 3,719,858.48
5. Step 5: Solve for x
   x = 3,719,858.48/2,212.84
6. Step 6: Final answer
   x = 1,681.03