Finding the Fourth Proportional to 1,772.82, 2,446.54 and 986.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,772.82 : 2,446.54 = 986.86 : x
2. Step 2: Convert to fraction form
   1,772.82/2,446.54 = 986.86/x
3. Step 3: Cross multiply
   1,772.82x = 2,446.54 × 986.86
4. Step 4: Simplify right side
   1,772.82x = 2,414,392.46
5. Step 5: Solve for x
   x = 2,414,392.46/1,772.82
6. Step 6: Final answer
   x = 1,361.89