Finding the Fourth Proportional to 1,930.24, 2,662.41 and 1,231.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,930.24 : 2,662.41 = 1,231.30 : x
2. Step 2: Convert to fraction form
   1,930.24/2,662.41 = 1,231.30/x
3. Step 3: Cross multiply
   1,930.24x = 2,662.41 × 1,231.30
4. Step 4: Simplify right side
   1,930.24x = 3,278,225.43
5. Step 5: Solve for x
   x = 3,278,225.43/1,930.24
6. Step 6: Final answer
   x = 1,698.35