Finding the Fourth Proportional to 1,168.65, 1,612.71 and 671.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.65 : 1,612.71 = 671.38 : x
2. Step 2: Convert to fraction form
   1,168.65/1,612.71 = 671.38/x
3. Step 3: Cross multiply
   1,168.65x = 1,612.71 × 671.38
4. Step 4: Simplify right side
   1,168.65x = 1,082,741.24
5. Step 5: Solve for x
   x = 1,082,741.24/1,168.65
6. Step 6: Final answer
   x = 926.49