Finding the Fourth Proportional to 2,131.30, 3,196.74 and 744.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.30 : 3,196.74 = 744.38 : x
2. Step 2: Convert to fraction form
   2,131.30/3,196.74 = 744.38/x
3. Step 3: Cross multiply
   2,131.30x = 3,196.74 × 744.38
4. Step 4: Simplify right side
   2,131.30x = 2,379,573.34
5. Step 5: Solve for x
   x = 2,379,573.34/2,131.30
6. Step 6: Final answer
   x = 1,116.49