Finding the Fourth Proportional to 1,735.76, 2,395.37 and 989.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,735.76 : 2,395.37 = 989.72 : x
2. Step 2: Convert to fraction form
   1,735.76/2,395.37 = 989.72/x
3. Step 3: Cross multiply
   1,735.76x = 2,395.37 × 989.72
4. Step 4: Simplify right side
   1,735.76x = 2,370,745.60
5. Step 5: Solve for x
   x = 2,370,745.60/1,735.76
6. Step 6: Final answer
   x = 1,365.83