Finding the Fourth Proportional to 1,783.31, 2,460.86 and 986.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.31 : 2,460.86 = 986.59 : x
2. Step 2: Convert to fraction form
   1,783.31/2,460.86 = 986.59/x
3. Step 3: Cross multiply
   1,783.31x = 2,460.86 × 986.59
4. Step 4: Simplify right side
   1,783.31x = 2,427,857.35
5. Step 5: Solve for x
   x = 2,427,857.35/1,783.31
6. Step 6: Final answer
   x = 1,361.43