Finding the Fourth Proportional to 2,019.51, 3,026.43 and 1,581.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.51 : 3,026.43 = 1,581.30 : x
2. Step 2: Convert to fraction form
   2,019.51/3,026.43 = 1,581.30/x
3. Step 3: Cross multiply
   2,019.51x = 3,026.43 × 1,581.30
4. Step 4: Simplify right side
   2,019.51x = 4,785,693.76
5. Step 5: Solve for x
   x = 4,785,693.76/2,019.51
6. Step 6: Final answer
   x = 2,369.73