Finding the Fourth Proportional to 1,608.04, 2,411.15 and 786.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.04 : 2,411.15 = 786.09 : x
2. Step 2: Convert to fraction form
   1,608.04/2,411.15 = 786.09/x
3. Step 3: Cross multiply
   1,608.04x = 2,411.15 × 786.09
4. Step 4: Simplify right side
   1,608.04x = 1,895,380.90
5. Step 5: Solve for x
   x = 1,895,380.90/1,608.04
6. Step 6: Final answer
   x = 1,178.69