Finding the Fourth Proportional to 2,007.86, 3,012.23 and 709.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.86 : 3,012.23 = 709.34 : x
2. Step 2: Convert to fraction form
   2,007.86/3,012.23 = 709.34/x
3. Step 3: Cross multiply
   2,007.86x = 3,012.23 × 709.34
4. Step 4: Simplify right side
   2,007.86x = 2,136,681.94
5. Step 5: Solve for x
   x = 2,136,681.94/2,007.86
6. Step 6: Final answer
   x = 1,064.16