Finding the Fourth Proportional to 2,218.50, 3,062.43 and 1,939.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.50 : 3,062.43 = 1,939.14 : x
2. Step 2: Convert to fraction form
   2,218.50/3,062.43 = 1,939.14/x
3. Step 3: Cross multiply
   2,218.50x = 3,062.43 × 1,939.14
4. Step 4: Simplify right side
   2,218.50x = 5,938,480.51
5. Step 5: Solve for x
   x = 5,938,480.51/2,218.50
6. Step 6: Final answer
   x = 2,676.80