Finding the Fourth Proportional to 1,649.75, 2,275.47 and 986.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,649.75 : 2,275.47 = 986.09 : x
2. Step 2: Convert to fraction form
   1,649.75/2,275.47 = 986.09/x
3. Step 3: Cross multiply
   1,649.75x = 2,275.47 × 986.09
4. Step 4: Simplify right side
   1,649.75x = 2,243,806.83
5. Step 5: Solve for x
   x = 2,243,806.83/1,649.75
6. Step 6: Final answer
   x = 1,360.09