Finding the Fourth Proportional to 2,581, 3,561.92 and 1,587.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581 : 3,561.92 = 1,587.34 : x
2. Step 2: Convert to fraction form
   2,581/3,561.92 = 1,587.34/x
3. Step 3: Cross multiply
   2,581x = 3,561.92 × 1,587.34
4. Step 4: Simplify right side
   2,581x = 5,653,978.09
5. Step 5: Solve for x
   x = 5,653,978.09/2,581
6. Step 6: Final answer
   x = 2,190.62