Finding the Fourth Proportional to 1,175.69, 1,622.42 and 678.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,175.69 : 1,622.42 = 678.29 : x
2. Step 2: Convert to fraction form
   1,175.69/1,622.42 = 678.29/x
3. Step 3: Cross multiply
   1,175.69x = 1,622.42 × 678.29
4. Step 4: Simplify right side
   1,175.69x = 1,100,471.26
5. Step 5: Solve for x
   x = 1,100,471.26/1,175.69
6. Step 6: Final answer
   x = 936.03