Finding the Fourth Proportional to 1,173.72, 1,619.61 and 676.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.72 : 1,619.61 = 676.34 : x
2. Step 2: Convert to fraction form
   1,173.72/1,619.61 = 676.34/x
3. Step 3: Cross multiply
   1,173.72x = 1,619.61 × 676.34
4. Step 4: Simplify right side
   1,173.72x = 1,095,398.93
5. Step 5: Solve for x
   x = 1,095,398.93/1,173.72
6. Step 6: Final answer
   x = 933.27