Finding the Fourth Proportional to 1,731.41, 2,389.33 and 985.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,731.41 : 2,389.33 = 985.40 : x
2. Step 2: Convert to fraction form
   1,731.41/2,389.33 = 985.40/x
3. Step 3: Cross multiply
   1,731.41x = 2,389.33 × 985.40
4. Step 4: Simplify right side
   1,731.41x = 2,354,445.78
5. Step 5: Solve for x
   x = 2,354,445.78/1,731.41
6. Step 6: Final answer
   x = 1,359.84