Finding the Fourth Proportional to 1,731.63, 2,389.55 and 985.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,731.63 : 2,389.55 = 985.59 : x
2. Step 2: Convert to fraction form
   1,731.63/2,389.55 = 985.59/x
3. Step 3: Cross multiply
   1,731.63x = 2,389.55 × 985.59
4. Step 4: Simplify right side
   1,731.63x = 2,355,123.92
5. Step 5: Solve for x
   x = 2,355,123.92/1,731.63
6. Step 6: Final answer
   x = 1,360.06