Finding the Fourth Proportional to 1,890.09, 2,608.25 and 1,050.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.09 : 2,608.25 = 1,050.80 : x
2. Step 2: Convert to fraction form
   1,890.09/2,608.25 = 1,050.80/x
3. Step 3: Cross multiply
   1,890.09x = 2,608.25 × 1,050.80
4. Step 4: Simplify right side
   1,890.09x = 2,740,730.80
5. Step 5: Solve for x
   x = 2,740,730.80/1,890.09
6. Step 6: Final answer
   x = 1,450.05