Finding the Fourth Proportional to 1,649.72, 2,275.32 and 986.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,649.72 : 2,275.32 = 986.42 : x
2. Step 2: Convert to fraction form
   1,649.72/2,275.32 = 986.42/x
3. Step 3: Cross multiply
   1,649.72x = 2,275.32 × 986.42
4. Step 4: Simplify right side
   1,649.72x = 2,244,421.15
5. Step 5: Solve for x
   x = 2,244,421.15/1,649.72
6. Step 6: Final answer
   x = 1,360.49