Finding the Fourth Proportional to 2,172.81, 3,260.84 and 1,019.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.81 : 3,260.84 = 1,019.37 : x
2. Step 2: Convert to fraction form
   2,172.81/3,260.84 = 1,019.37/x
3. Step 3: Cross multiply
   2,172.81x = 3,260.84 × 1,019.37
4. Step 4: Simplify right side
   2,172.81x = 3,323,997.37
5. Step 5: Solve for x
   x = 3,323,997.37/2,172.81
6. Step 6: Final answer
   x = 1,529.82