Finding the Fourth Proportional to 2,012.65, 3,019.28 and 713.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.65 : 3,019.28 = 713.81 : x
2. Step 2: Convert to fraction form
   2,012.65/3,019.28 = 713.81/x
3. Step 3: Cross multiply
   2,012.65x = 3,019.28 × 713.81
4. Step 4: Simplify right side
   2,012.65x = 2,155,196.24
5. Step 5: Solve for x
   x = 2,155,196.24/2,012.65
6. Step 6: Final answer
   x = 1,070.83