Finding the Fourth Proportional to 2,491.41, 3,737.72 and 931.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.41 : 3,737.72 = 931.49 : x
2. Step 2: Convert to fraction form
   2,491.41/3,737.72 = 931.49/x
3. Step 3: Cross multiply
   2,491.41x = 3,737.72 × 931.49
4. Step 4: Simplify right side
   2,491.41x = 3,481,648.80
5. Step 5: Solve for x
   x = 3,481,648.80/2,491.41
6. Step 6: Final answer
   x = 1,397.46