Finding the Fourth Proportional to 1,648.15, 2,273.61 and 1,116.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.15 : 2,273.61 = 1,116.79 : x
2. Step 2: Convert to fraction form
   1,648.15/2,273.61 = 1,116.79/x
3. Step 3: Cross multiply
   1,648.15x = 2,273.61 × 1,116.79
4. Step 4: Simplify right side
   1,648.15x = 2,539,144.91
5. Step 5: Solve for x
   x = 2,539,144.91/1,648.15
6. Step 6: Final answer
   x = 1,540.60