Finding the Fourth Proportional to 1,899.30, 2,847.72 and 803.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.30 : 2,847.72 = 803.10 : x
2. Step 2: Convert to fraction form
   1,899.30/2,847.72 = 803.10/x
3. Step 3: Cross multiply
   1,899.30x = 2,847.72 × 803.10
4. Step 4: Simplify right side
   1,899.30x = 2,287,003.93
5. Step 5: Solve for x
   x = 2,287,003.93/1,899.30
6. Step 6: Final answer
   x = 1,204.13