Finding the Fourth Proportional to 3,464.79, 5,196.56 and 999

Step by Step Solution

1. Step 1: Write the proportion equation
   3,464.79 : 5,196.56 = 999 : x
2. Step 2: Convert to fraction form
   3,464.79/5,196.56 = 999/x
3. Step 3: Cross multiply
   3,464.79x = 5,196.56 × 999
4. Step 4: Simplify right side
   3,464.79x = 5,191,358.45
5. Step 5: Solve for x
   x = 5,191,358.45/3,464.79
6. Step 6: Final answer
   x = 1,498.32