Finding the Fourth Proportional to 1,796.36, 2,478.76 and 999.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,796.36 : 2,478.76 = 999.49 : x
2. Step 2: Convert to fraction form
   1,796.36/2,478.76 = 999.49/x
3. Step 3: Cross multiply
   1,796.36x = 2,478.76 × 999.49
4. Step 4: Simplify right side
   1,796.36x = 2,477,495.83
5. Step 5: Solve for x
   x = 2,477,495.83/1,796.36
6. Step 6: Final answer
   x = 1,379.18