Finding the Fourth Proportional to 1,581.51, 2,181.81 and 952.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581.51 : 2,181.81 = 952.03 : x
2. Step 2: Convert to fraction form
   1,581.51/2,181.81 = 952.03/x
3. Step 3: Cross multiply
   1,581.51x = 2,181.81 × 952.03
4. Step 4: Simplify right side
   1,581.51x = 2,077,148.57
5. Step 5: Solve for x
   x = 2,077,148.57/1,581.51
6. Step 6: Final answer
   x = 1,313.40