Finding the Fourth Proportional to 2,471.31, 3,410.20 and 1,587.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,471.31 : 3,410.20 = 1,587.09 : x
2. Step 2: Convert to fraction form
   2,471.31/3,410.20 = 1,587.09/x
3. Step 3: Cross multiply
   2,471.31x = 3,410.20 × 1,587.09
4. Step 4: Simplify right side
   2,471.31x = 5,412,309.09
5. Step 5: Solve for x
   x = 5,412,309.09/2,471.31
6. Step 6: Final answer
   x = 2,190.06