Finding the Fourth Proportional to 2,450.98, 3,677.38 and 990.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,450.98 : 3,677.38 = 990.56 : x
2. Step 2: Convert to fraction form
   2,450.98/3,677.38 = 990.56/x
3. Step 3: Cross multiply
   2,450.98x = 3,677.38 × 990.56
4. Step 4: Simplify right side
   2,450.98x = 3,642,665.53
5. Step 5: Solve for x
   x = 3,642,665.53/2,450.98
6. Step 6: Final answer
   x = 1,486.21