Finding the Fourth Proportional to 1,732.40, 2,390.72 and 986.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,732.40 : 2,390.72 = 986.24 : x
2. Step 2: Convert to fraction form
   1,732.40/2,390.72 = 986.24/x
3. Step 3: Cross multiply
   1,732.40x = 2,390.72 × 986.24
4. Step 4: Simplify right side
   1,732.40x = 2,357,823.69
5. Step 5: Solve for x
   x = 2,357,823.69/1,732.40
6. Step 6: Final answer
   x = 1,361.02