Finding the Fourth Proportional to 1,365.73, 1,883.86 and 993.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.73 : 1,883.86 = 993.13 : x
2. Step 2: Convert to fraction form
   1,365.73/1,883.86 = 993.13/x
3. Step 3: Cross multiply
   1,365.73x = 1,883.86 × 993.13
4. Step 4: Simplify right side
   1,365.73x = 1,870,917.88
5. Step 5: Solve for x
   x = 1,870,917.88/1,365.73
6. Step 6: Final answer
   x = 1,369.90