Finding the Fourth Proportional to 2,020.23, 2,786.69 and 1,310.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.23 : 2,786.69 = 1,310.94 : x
2. Step 2: Convert to fraction form
   2,020.23/2,786.69 = 1,310.94/x
3. Step 3: Cross multiply
   2,020.23x = 2,786.69 × 1,310.94
4. Step 4: Simplify right side
   2,020.23x = 3,653,186.67
5. Step 5: Solve for x
   x = 3,653,186.67/2,020.23
6. Step 6: Final answer
   x = 1,808.30