Finding the Fourth Proportional to 1,776.04, 2,450.56 and 989.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.04 : 2,450.56 = 989.94 : x
2. Step 2: Convert to fraction form
   1,776.04/2,450.56 = 989.94/x
3. Step 3: Cross multiply
   1,776.04x = 2,450.56 × 989.94
4. Step 4: Simplify right side
   1,776.04x = 2,425,907.37
5. Step 5: Solve for x
   x = 2,425,907.37/1,776.04
6. Step 6: Final answer
   x = 1,365.91