Finding the Fourth Proportional to 1,648.08, 2,273.40 and 984.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.08 : 2,273.40 = 984.72 : x
2. Step 2: Convert to fraction form
   1,648.08/2,273.40 = 984.72/x
3. Step 3: Cross multiply
   1,648.08x = 2,273.40 × 984.72
4. Step 4: Simplify right side
   1,648.08x = 2,238,662.45
5. Step 5: Solve for x
   x = 2,238,662.45/1,648.08
6. Step 6: Final answer
   x = 1,358.35