Finding the Fourth Proportional to 2,581.57, 3,872.81 and 937.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.57 : 3,872.81 = 937.98 : x
2. Step 2: Convert to fraction form
   2,581.57/3,872.81 = 937.98/x
3. Step 3: Cross multiply
   2,581.57x = 3,872.81 × 937.98
4. Step 4: Simplify right side
   2,581.57x = 3,632,620.67
5. Step 5: Solve for x
   x = 3,632,620.67/2,581.57
6. Step 6: Final answer
   x = 1,407.14