Finding the Fourth Proportional to 2,219.67, 3,068.69 and 1,942.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.67 : 3,068.69 = 1,942.65 : x
2. Step 2: Convert to fraction form
   2,219.67/3,068.69 = 1,942.65/x
3. Step 3: Cross multiply
   2,219.67x = 3,068.69 × 1,942.65
4. Step 4: Simplify right side
   2,219.67x = 5,961,380.92
5. Step 5: Solve for x
   x = 5,961,380.92/2,219.67
6. Step 6: Final answer
   x = 2,685.71