Finding the Fourth Proportional to 1,520.41, 2,097.98 and 857.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.41 : 2,097.98 = 857.22 : x
2. Step 2: Convert to fraction form
   1,520.41/2,097.98 = 857.22/x
3. Step 3: Cross multiply
   1,520.41x = 2,097.98 × 857.22
4. Step 4: Simplify right side
   1,520.41x = 1,798,427.82
5. Step 5: Solve for x
   x = 1,798,427.82/1,520.41
6. Step 6: Final answer
   x = 1,182.86