Finding the Fourth Proportional to 1,890.30, 2,608.56 and 1,050.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.30 : 2,608.56 = 1,050.99 : x
2. Step 2: Convert to fraction form
   1,890.30/2,608.56 = 1,050.99/x
3. Step 3: Cross multiply
   1,890.30x = 2,608.56 × 1,050.99
4. Step 4: Simplify right side
   1,890.30x = 2,741,570.47
5. Step 5: Solve for x
   x = 2,741,570.47/1,890.30
6. Step 6: Final answer
   x = 1,450.34