Finding the Fourth Proportional to 1,899.31, 2,850.10 and 667.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.31 : 2,850.10 = 667.75 : x
2. Step 2: Convert to fraction form
   1,899.31/2,850.10 = 667.75/x
3. Step 3: Cross multiply
   1,899.31x = 2,850.10 × 667.75
4. Step 4: Simplify right side
   1,899.31x = 1,903,150.94
5. Step 5: Solve for x
   x = 1,903,150.94/1,899.31
6. Step 6: Final answer
   x = 1,002.02