Finding the Fourth Proportional to 1,175.23, 1,621.76 and 677.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,175.23 : 1,621.76 = 677.89 : x
2. Step 2: Convert to fraction form
   1,175.23/1,621.76 = 677.89/x
3. Step 3: Cross multiply
   1,175.23x = 1,621.76 × 677.89
4. Step 4: Simplify right side
   1,175.23x = 1,099,374.89
5. Step 5: Solve for x
   x = 1,099,374.89/1,175.23
6. Step 6: Final answer
   x = 935.46