Finding the Fourth Proportional to 1,890.12, 2,834.56 and 1,231.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.12 : 2,834.56 = 1,231.59 : x
2. Step 2: Convert to fraction form
   1,890.12/2,834.56 = 1,231.59/x
3. Step 3: Cross multiply
   1,890.12x = 2,834.56 × 1,231.59
4. Step 4: Simplify right side
   1,890.12x = 3,491,015.75
5. Step 5: Solve for x
   x = 3,491,015.75/1,890.12
6. Step 6: Final answer
   x = 1,846.98