Finding the Fourth Proportional to 1,736.57, 2,396.61 and 990.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,736.57 : 2,396.61 = 990.56 : x
2. Step 2: Convert to fraction form
   1,736.57/2,396.61 = 990.56/x
3. Step 3: Cross multiply
   1,736.57x = 2,396.61 × 990.56
4. Step 4: Simplify right side
   1,736.57x = 2,373,986.00
5. Step 5: Solve for x
   x = 2,373,986.00/1,736.57
6. Step 6: Final answer
   x = 1,367.05