Finding the Fourth Proportional to 1,962.15, 2,922.28 and 1,939.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.15 : 2,922.28 = 1,939.47 : x
2. Step 2: Convert to fraction form
   1,962.15/2,922.28 = 1,939.47/x
3. Step 3: Cross multiply
   1,962.15x = 2,922.28 × 1,939.47
4. Step 4: Simplify right side
   1,962.15x = 5,667,669.54
5. Step 5: Solve for x
   x = 5,667,669.54/1,962.15
6. Step 6: Final answer
   x = 2,888.50