Finding the Fourth Proportional to 2,099.33, 3,142.91 and 1,581.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.33 : 3,142.91 = 1,581.51 : x
2. Step 2: Convert to fraction form
   2,099.33/3,142.91 = 1,581.51/x
3. Step 3: Cross multiply
   2,099.33x = 3,142.91 × 1,581.51
4. Step 4: Simplify right side
   2,099.33x = 4,970,547.55
5. Step 5: Solve for x
   x = 4,970,547.55/2,099.33
6. Step 6: Final answer
   x = 2,367.69