Finding the Fourth Proportional to 1,736.42, 2,396.23 and 990.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,736.42 : 2,396.23 = 990.38 : x
2. Step 2: Convert to fraction form
   1,736.42/2,396.23 = 990.38/x
3. Step 3: Cross multiply
   1,736.42x = 2,396.23 × 990.38
4. Step 4: Simplify right side
   1,736.42x = 2,373,172.28
5. Step 5: Solve for x
   x = 2,373,172.28/1,736.42
6. Step 6: Final answer
   x = 1,366.70