Finding the Fourth Proportional to 1,900.16, 2,852.52 and 805.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,900.16 : 2,852.52 = 805.28 : x
2. Step 2: Convert to fraction form
   1,900.16/2,852.52 = 805.28/x
3. Step 3: Cross multiply
   1,900.16x = 2,852.52 × 805.28
4. Step 4: Simplify right side
   1,900.16x = 2,297,077.31
5. Step 5: Solve for x
   x = 2,297,077.31/1,900.16
6. Step 6: Final answer
   x = 1,208.89