Finding the Fourth Proportional to 2,581.54, 3,870.99 and 1,265.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.54 : 3,870.99 = 1,265.42 : x
2. Step 2: Convert to fraction form
   2,581.54/3,870.99 = 1,265.42/x
3. Step 3: Cross multiply
   2,581.54x = 3,870.99 × 1,265.42
4. Step 4: Simplify right side
   2,581.54x = 4,898,437.84
5. Step 5: Solve for x
   x = 4,898,437.84/2,581.54
6. Step 6: Final answer
   x = 1,897.49