Finding the Fourth Proportional to 1,173.98, 1,619.89 and 676.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.98 : 1,619.89 = 676.64 : x
2. Step 2: Convert to fraction form
   1,173.98/1,619.89 = 676.64/x
3. Step 3: Cross multiply
   1,173.98x = 1,619.89 × 676.64
4. Step 4: Simplify right side
   1,173.98x = 1,096,084.73
5. Step 5: Solve for x
   x = 1,096,084.73/1,173.98
6. Step 6: Final answer
   x = 933.65