Finding the Fourth Proportional to 1,776.73, 2,451.90 and 990.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.73 : 2,451.90 = 990.83 : x
2. Step 2: Convert to fraction form
   1,776.73/2,451.90 = 990.83/x
3. Step 3: Cross multiply
   1,776.73x = 2,451.90 × 990.83
4. Step 4: Simplify right side
   1,776.73x = 2,429,398.86
5. Step 5: Solve for x
   x = 2,429,398.86/1,776.73
6. Step 6: Final answer
   x = 1,367.34