Finding the Fourth Proportional to 1,641.72, 2,464.26 and 1,280.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.72 : 2,464.26 = 1,280.46 : x
2. Step 2: Convert to fraction form
   1,641.72/2,464.26 = 1,280.46/x
3. Step 3: Cross multiply
   1,641.72x = 2,464.26 × 1,280.46
4. Step 4: Simplify right side
   1,641.72x = 3,155,386.36
5. Step 5: Solve for x
   x = 3,155,386.36/1,641.72
6. Step 6: Final answer
   x = 1,922.00