Finding the Fourth Proportional to 2,131.49, 3,197.21 and 744.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.49 : 3,197.21 = 744.83 : x
2. Step 2: Convert to fraction form
   2,131.49/3,197.21 = 744.83/x
3. Step 3: Cross multiply
   2,131.49x = 3,197.21 × 744.83
4. Step 4: Simplify right side
   2,131.49x = 2,381,363.80
5. Step 5: Solve for x
   x = 2,381,363.80/2,131.49
6. Step 6: Final answer
   x = 1,117.23