Finding the Fourth Proportional to 1,464.57, 2,020.79 and 992.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,464.57 : 2,020.79 = 992.55 : x
2. Step 2: Convert to fraction form
   1,464.57/2,020.79 = 992.55/x
3. Step 3: Cross multiply
   1,464.57x = 2,020.79 × 992.55
4. Step 4: Simplify right side
   1,464.57x = 2,005,730.15
5. Step 5: Solve for x
   x = 2,005,730.15/1,464.57
6. Step 6: Final answer
   x = 1,369.50