Finding the Fourth Proportional to 1,342.97, 1,851.98 and 871.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.97 : 1,851.98 = 871.02 : x
2. Step 2: Convert to fraction form
   1,342.97/1,851.98 = 871.02/x
3. Step 3: Cross multiply
   1,342.97x = 1,851.98 × 871.02
4. Step 4: Simplify right side
   1,342.97x = 1,613,111.62
5. Step 5: Solve for x
   x = 1,613,111.62/1,342.97
6. Step 6: Final answer
   x = 1,201.15