Finding the Fourth Proportional to 1,649.89, 2,276.79 and 986.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,649.89 : 2,276.79 = 986.35 : x
2. Step 2: Convert to fraction form
   1,649.89/2,276.79 = 986.35/x
3. Step 3: Cross multiply
   1,649.89x = 2,276.79 × 986.35
4. Step 4: Simplify right side
   1,649.89x = 2,245,711.82
5. Step 5: Solve for x
   x = 2,245,711.82/1,649.89
6. Step 6: Final answer
   x = 1,361.13