Finding the Fourth Proportional to 1,992.21, 2,986.05 and 1,016.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,992.21 : 2,986.05 = 1,016.25 : x
2. Step 2: Convert to fraction form
   1,992.21/2,986.05 = 1,016.25/x
3. Step 3: Cross multiply
   1,992.21x = 2,986.05 × 1,016.25
4. Step 4: Simplify right side
   1,992.21x = 3,034,573.31
5. Step 5: Solve for x
   x = 3,034,573.31/1,992.21
6. Step 6: Final answer
   x = 1,523.22