Finding the Fourth Proportional to 1,732.61, 2,391.17 and 986.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,732.61 : 2,391.17 = 986.60 : x
2. Step 2: Convert to fraction form
   1,732.61/2,391.17 = 986.60/x
3. Step 3: Cross multiply
   1,732.61x = 2,391.17 × 986.60
4. Step 4: Simplify right side
   1,732.61x = 2,359,121.47
5. Step 5: Solve for x
   x = 2,359,121.47/1,732.61
6. Step 6: Final answer
   x = 1,361.60