Finding the Fourth Proportional to 1,778.82, 2,454.62 and 992.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778.82 : 2,454.62 = 992.72 : x
2. Step 2: Convert to fraction form
   1,778.82/2,454.62 = 992.72/x
3. Step 3: Cross multiply
   1,778.82x = 2,454.62 × 992.72
4. Step 4: Simplify right side
   1,778.82x = 2,436,733.13
5. Step 5: Solve for x
   x = 2,436,733.13/1,778.82
6. Step 6: Final answer
   x = 1,369.86