Finding the Fourth Proportional to 1,731.87, 2,390.04 and 985.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,731.87 : 2,390.04 = 985.89 : x
2. Step 2: Convert to fraction form
   1,731.87/2,390.04 = 985.89/x
3. Step 3: Cross multiply
   1,731.87x = 2,390.04 × 985.89
4. Step 4: Simplify right side
   1,731.87x = 2,356,316.54
5. Step 5: Solve for x
   x = 2,356,316.54/1,731.87
6. Step 6: Final answer
   x = 1,360.56