Finding the Fourth Proportional to 2,065.65, 3,100.43 and 1,283.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.65 : 3,100.43 = 1,283.28 : x
2. Step 2: Convert to fraction form
   2,065.65/3,100.43 = 1,283.28/x
3. Step 3: Cross multiply
   2,065.65x = 3,100.43 × 1,283.28
4. Step 4: Simplify right side
   2,065.65x = 3,978,719.81
5. Step 5: Solve for x
   x = 3,978,719.81/2,065.65
6. Step 6: Final answer
   x = 1,926.13