Finding the Fourth Proportional to 1,185.47, 1,778.83 and 608.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.47 : 1,778.83 = 608.34 : x
2. Step 2: Convert to fraction form
   1,185.47/1,778.83 = 608.34/x
3. Step 3: Cross multiply
   1,185.47x = 1,778.83 × 608.34
4. Step 4: Simplify right side
   1,185.47x = 1,082,138.59
5. Step 5: Solve for x
   x = 1,082,138.59/1,185.47
6. Step 6: Final answer
   x = 912.84