Finding the Fourth Proportional to 1,776.04, 2,450.93 and 990.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.04 : 2,450.93 = 990.09 : x
2. Step 2: Convert to fraction form
   1,776.04/2,450.93 = 990.09/x
3. Step 3: Cross multiply
   1,776.04x = 2,450.93 × 990.09
4. Step 4: Simplify right side
   1,776.04x = 2,426,641.28
5. Step 5: Solve for x
   x = 2,426,641.28/1,776.04
6. Step 6: Final answer
   x = 1,366.32