Finding the Fourth Proportional to 2,581.08, 3,870.69 and 937.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.08 : 3,870.69 = 937.20 : x
2. Step 2: Convert to fraction form
   2,581.08/3,870.69 = 937.20/x
3. Step 3: Cross multiply
   2,581.08x = 3,870.69 × 937.20
4. Step 4: Simplify right side
   2,581.08x = 3,627,610.67
5. Step 5: Solve for x
   x = 3,627,610.67/2,581.08
6. Step 6: Final answer
   x = 1,405.46