Finding the Fourth Proportional to 1,173.67, 1,761.31 and 626.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.67 : 1,761.31 = 626.24 : x
2. Step 2: Convert to fraction form
   1,173.67/1,761.31 = 626.24/x
3. Step 3: Cross multiply
   1,173.67x = 1,761.31 × 626.24
4. Step 4: Simplify right side
   1,173.67x = 1,103,002.77
5. Step 5: Solve for x
   x = 1,103,002.77/1,173.67
6. Step 6: Final answer
   x = 939.79