Finding the Fourth Proportional to 1,641.72, 2,470.85 and 1,233

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.72 : 2,470.85 = 1,233 : x
2. Step 2: Convert to fraction form
   1,641.72/2,470.85 = 1,233/x
3. Step 3: Cross multiply
   1,641.72x = 2,470.85 × 1,233
4. Step 4: Simplify right side
   1,641.72x = 3,046,558.05
5. Step 5: Solve for x
   x = 3,046,558.05/1,641.72
6. Step 6: Final answer
   x = 1,855.71