Finding the Fourth Proportional to 1,731.16, 2,389.06 and 985.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,731.16 : 2,389.06 = 985.10 : x
2. Step 2: Convert to fraction form
   1,731.16/2,389.06 = 985.10/x
3. Step 3: Cross multiply
   1,731.16x = 2,389.06 × 985.10
4. Step 4: Simplify right side
   1,731.16x = 2,353,463.01
5. Step 5: Solve for x
   x = 2,353,463.01/1,731.16
6. Step 6: Final answer
   x = 1,359.47