Finding the Fourth Proportional to 2,019.07, 2,786.28 and 1,122.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.07 : 2,786.28 = 1,122.83 : x
2. Step 2: Convert to fraction form
   2,019.07/2,786.28 = 1,122.83/x
3. Step 3: Cross multiply
   2,019.07x = 2,786.28 × 1,122.83
4. Step 4: Simplify right side
   2,019.07x = 3,128,511.08
5. Step 5: Solve for x
   x = 3,128,511.08/2,019.07
6. Step 6: Final answer
   x = 1,549.48