Finding the Fourth Proportional to 2,019.45, 2,786.88 and 1,135.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.45 : 2,786.88 = 1,135.23 : x
2. Step 2: Convert to fraction form
   2,019.45/2,786.88 = 1,135.23/x
3. Step 3: Cross multiply
   2,019.45x = 2,786.88 × 1,135.23
4. Step 4: Simplify right side
   2,019.45x = 3,163,749.78
5. Step 5: Solve for x
   x = 3,163,749.78/2,019.45
6. Step 6: Final answer
   x = 1,566.64