Finding the Fourth Proportional to 1,173.56, 1,619.72 and 676.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.56 : 1,619.72 = 676.16 : x
2. Step 2: Convert to fraction form
   1,173.56/1,619.72 = 676.16/x
3. Step 3: Cross multiply
   1,173.56x = 1,619.72 × 676.16
4. Step 4: Simplify right side
   1,173.56x = 1,095,189.88
5. Step 5: Solve for x
   x = 1,095,189.88/1,173.56
6. Step 6: Final answer
   x = 933.22