Finding the Fourth Proportional to 2,131.73, 3,196.68 and 744.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.73 : 3,196.68 = 744.65 : x
2. Step 2: Convert to fraction form
   2,131.73/3,196.68 = 744.65/x
3. Step 3: Cross multiply
   2,131.73x = 3,196.68 × 744.65
4. Step 4: Simplify right side
   2,131.73x = 2,380,407.76
5. Step 5: Solve for x
   x = 2,380,407.76/2,131.73
6. Step 6: Final answer
   x = 1,116.66