Finding the Fourth Proportional to 1,778.36, 2,453.83 and 992.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778.36 : 2,453.83 = 992.25 : x
2. Step 2: Convert to fraction form
   1,778.36/2,453.83 = 992.25/x
3. Step 3: Cross multiply
   1,778.36x = 2,453.83 × 992.25
4. Step 4: Simplify right side
   1,778.36x = 2,434,810.34
5. Step 5: Solve for x
   x = 2,434,810.34/1,778.36
6. Step 6: Final answer
   x = 1,369.14