Finding the Fourth Proportional to 2,085.31, 2,877.36 and 1,201.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.31 : 2,877.36 = 1,201.18 : x
2. Step 2: Convert to fraction form
   2,085.31/2,877.36 = 1,201.18/x
3. Step 3: Cross multiply
   2,085.31x = 2,877.36 × 1,201.18
4. Step 4: Simplify right side
   2,085.31x = 3,456,227.28
5. Step 5: Solve for x
   x = 3,456,227.28/2,085.31
6. Step 6: Final answer
   x = 1,657.42