Finding the Fourth Proportional to 1,899.72, 2,849.76 and 803.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.72 : 2,849.76 = 803.94 : x
2. Step 2: Convert to fraction form
   1,899.72/2,849.76 = 803.94/x
3. Step 3: Cross multiply
   1,899.72x = 2,849.76 × 803.94
4. Step 4: Simplify right side
   1,899.72x = 2,291,036.05
5. Step 5: Solve for x
   x = 2,291,036.05/1,899.72
6. Step 6: Final answer
   x = 1,205.99