Finding the Fourth Proportional to 1,520.17, 2,097.82 and 857.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.17 : 2,097.82 = 857.24 : x
2. Step 2: Convert to fraction form
   1,520.17/2,097.82 = 857.24/x
3. Step 3: Cross multiply
   1,520.17x = 2,097.82 × 857.24
4. Step 4: Simplify right side
   1,520.17x = 1,798,326.28
5. Step 5: Solve for x
   x = 1,798,326.28/1,520.17
6. Step 6: Final answer
   x = 1,182.98