Finding the Fourth Proportional to 2,680.94, 4,020.31 and 1,036.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.94 : 4,020.31 = 1,036.43 : x
2. Step 2: Convert to fraction form
   2,680.94/4,020.31 = 1,036.43/x
3. Step 3: Cross multiply
   2,680.94x = 4,020.31 × 1,036.43
4. Step 4: Simplify right side
   2,680.94x = 4,166,769.89
5. Step 5: Solve for x
   x = 4,166,769.89/2,680.94
6. Step 6: Final answer
   x = 1,554.22