Finding the Fourth Proportional to 1,462.31, 2,016.72 and 990.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,462.31 : 2,016.72 = 990.08 : x
2. Step 2: Convert to fraction form
   1,462.31/2,016.72 = 990.08/x
3. Step 3: Cross multiply
   1,462.31x = 2,016.72 × 990.08
4. Step 4: Simplify right side
   1,462.31x = 1,996,704.05
5. Step 5: Solve for x
   x = 1,996,704.05/1,462.31
6. Step 6: Final answer
   x = 1,365.45