Finding the Fourth Proportional to 1,643.73, 2,268.86 and 1,146.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,643.73 : 2,268.86 = 1,146.54 : x
2. Step 2: Convert to fraction form
   1,643.73/2,268.86 = 1,146.54/x
3. Step 3: Cross multiply
   1,643.73x = 2,268.86 × 1,146.54
4. Step 4: Simplify right side
   1,643.73x = 2,601,333.01
5. Step 5: Solve for x
   x = 2,601,333.01/1,643.73
6. Step 6: Final answer
   x = 1,582.58