Finding the Fourth Proportional to 2,581.34, 3,870.28 and 937.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.34 : 3,870.28 = 937.67 : x
2. Step 2: Convert to fraction form
   2,581.34/3,870.28 = 937.67/x
3. Step 3: Cross multiply
   2,581.34x = 3,870.28 × 937.67
4. Step 4: Simplify right side
   2,581.34x = 3,629,045.45
5. Step 5: Solve for x
   x = 3,629,045.45/2,581.34
6. Step 6: Final answer
   x = 1,405.88