Finding the Fourth Proportional to 1,732.59, 2,391.06 and 986.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,732.59 : 2,391.06 = 986.69 : x
2. Step 2: Convert to fraction form
   1,732.59/2,391.06 = 986.69/x
3. Step 3: Cross multiply
   1,732.59x = 2,391.06 × 986.69
4. Step 4: Simplify right side
   1,732.59x = 2,359,223.04
5. Step 5: Solve for x
   x = 2,359,223.04/1,732.59
6. Step 6: Final answer
   x = 1,361.67