Finding the Fourth Proportional to 1,731.89, 2,389.91 and 985.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,731.89 : 2,389.91 = 985.83 : x
2. Step 2: Convert to fraction form
   1,731.89/2,389.91 = 985.83/x
3. Step 3: Cross multiply
   1,731.89x = 2,389.91 × 985.83
4. Step 4: Simplify right side
   1,731.89x = 2,356,040.05
5. Step 5: Solve for x
   x = 2,356,040.05/1,731.89
6. Step 6: Final answer
   x = 1,360.39