Finding the Fourth Proportional to 2,072.69, 3,105.79 and 1,301.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.69 : 3,105.79 = 1,301.57 : x
2. Step 2: Convert to fraction form
   2,072.69/3,105.79 = 1,301.57/x
3. Step 3: Cross multiply
   2,072.69x = 3,105.79 × 1,301.57
4. Step 4: Simplify right side
   2,072.69x = 4,042,381.05
5. Step 5: Solve for x
   x = 4,042,381.05/2,072.69
6. Step 6: Final answer
   x = 1,950.31