Finding the Fourth Proportional to 2,212.30, 3,053.00 and 1,217.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.30 : 3,053.00 = 1,217.56 : x
2. Step 2: Convert to fraction form
   2,212.30/3,053.00 = 1,217.56/x
3. Step 3: Cross multiply
   2,212.30x = 3,053.00 × 1,217.56
4. Step 4: Simplify right side
   2,212.30x = 3,717,204.59
5. Step 5: Solve for x
   x = 3,717,204.59/2,212.30
6. Step 6: Final answer
   x = 1,680.25