Finding the Fourth Proportional to 1,511.22, 2,086.72 and 952.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.22 : 2,086.72 = 952.58 : x
2. Step 2: Convert to fraction form
   1,511.22/2,086.72 = 952.58/x
3. Step 3: Cross multiply
   1,511.22x = 2,086.72 × 952.58
4. Step 4: Simplify right side
   1,511.22x = 1,987,767.74
5. Step 5: Solve for x
   x = 1,987,767.74/1,511.22
6. Step 6: Final answer
   x = 1,315.34