Finding the Fourth Proportional to 2,131.48, 3,195.78 and 744.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.48 : 3,195.78 = 744.06 : x
2. Step 2: Convert to fraction form
   2,131.48/3,195.78 = 744.06/x
3. Step 3: Cross multiply
   2,131.48x = 3,195.78 × 744.06
4. Step 4: Simplify right side
   2,131.48x = 2,377,844.35
5. Step 5: Solve for x
   x = 2,377,844.35/2,131.48
6. Step 6: Final answer
   x = 1,115.58