Finding the Fourth Proportional to 2,580.92, 3,870.30 and 1,411.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.92 : 3,870.30 = 1,411.88 : x
2. Step 2: Convert to fraction form
   2,580.92/3,870.30 = 1,411.88/x
3. Step 3: Cross multiply
   2,580.92x = 3,870.30 × 1,411.88
4. Step 4: Simplify right side
   2,580.92x = 5,464,399.16
5. Step 5: Solve for x
   x = 5,464,399.16/2,580.92
6. Step 6: Final answer
   x = 2,117.23