Finding the Fourth Proportional to 1,418.83, 1,956.37 and 999.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.83 : 1,956.37 = 999.05 : x
2. Step 2: Convert to fraction form
   1,418.83/1,956.37 = 999.05/x
3. Step 3: Cross multiply
   1,418.83x = 1,956.37 × 999.05
4. Step 4: Simplify right side
   1,418.83x = 1,954,506.56
5. Step 5: Solve for x
   x = 1,954,506.56/1,418.83
6. Step 6: Final answer
   x = 1,377.55