Finding the Fourth Proportional to 1,520.34, 2,098.04 and 857.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.34 : 2,098.04 = 857.18 : x
2. Step 2: Convert to fraction form
   1,520.34/2,098.04 = 857.18/x
3. Step 3: Cross multiply
   1,520.34x = 2,098.04 × 857.18
4. Step 4: Simplify right side
   1,520.34x = 1,798,383.15
5. Step 5: Solve for x
   x = 1,798,383.15/1,520.34
6. Step 6: Final answer
   x = 1,182.88