Finding the Fourth Proportional to 2,485.31, 3,428.60 and 1,600.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.31 : 3,428.60 = 1,600.92 : x
2. Step 2: Convert to fraction form
   2,485.31/3,428.60 = 1,600.92/x
3. Step 3: Cross multiply
   2,485.31x = 3,428.60 × 1,600.92
4. Step 4: Simplify right side
   2,485.31x = 5,488,906.31
5. Step 5: Solve for x
   x = 5,488,906.31/2,485.31
6. Step 6: Final answer
   x = 2,208.54