Finding the Fourth Proportional to 2,019.35, 2,786.75 and 1,123.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.35 : 2,786.75 = 1,123.17 : x
2. Step 2: Convert to fraction form
   2,019.35/2,786.75 = 1,123.17/x
3. Step 3: Cross multiply
   2,019.35x = 2,786.75 × 1,123.17
4. Step 4: Simplify right side
   2,019.35x = 3,129,974.45
5. Step 5: Solve for x
   x = 3,129,974.45/2,019.35
6. Step 6: Final answer
   x = 1,549.99