Finding the Fourth Proportional to 2,019.30, 2,789.50 and 1,922.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.30 : 2,789.50 = 1,922.10 : x
2. Step 2: Convert to fraction form
   2,019.30/2,789.50 = 1,922.10/x
3. Step 3: Cross multiply
   2,019.30x = 2,789.50 × 1,922.10
4. Step 4: Simplify right side
   2,019.30x = 5,361,697.95
5. Step 5: Solve for x
   x = 5,361,697.95/2,019.30
6. Step 6: Final answer
   x = 2,655.23