Finding the Fourth Proportional to 2,150.69, 3,222.99 and 1,890.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.69 : 3,222.99 = 1,890.07 : x
2. Step 2: Convert to fraction form
   2,150.69/3,222.99 = 1,890.07/x
3. Step 3: Cross multiply
   2,150.69x = 3,222.99 × 1,890.07
4. Step 4: Simplify right side
   2,150.69x = 6,091,668.65
5. Step 5: Solve for x
   x = 6,091,668.65/2,150.69
6. Step 6: Final answer
   x = 2,832.43