Finding the Fourth Proportional to 1,732.29, 2,390.67 and 986.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,732.29 : 2,390.67 = 986.31 : x
2. Step 2: Convert to fraction form
   1,732.29/2,390.67 = 986.31/x
3. Step 3: Cross multiply
   1,732.29x = 2,390.67 × 986.31
4. Step 4: Simplify right side
   1,732.29x = 2,357,941.73
5. Step 5: Solve for x
   x = 2,357,941.73/1,732.29
6. Step 6: Final answer
   x = 1,361.17