Finding the Fourth Proportional to 1,648.25, 2,274.78 and 949.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.25 : 2,274.78 = 949.76 : x
2. Step 2: Convert to fraction form
   1,648.25/2,274.78 = 949.76/x
3. Step 3: Cross multiply
   1,648.25x = 2,274.78 × 949.76
4. Step 4: Simplify right side
   1,648.25x = 2,160,483.68
5. Step 5: Solve for x
   x = 2,160,483.68/1,648.25
6. Step 6: Final answer
   x = 1,310.78