Finding the Fourth Proportional to 2,030.94, 3,046.42 and 645.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,030.94 : 3,046.42 = 645.25 : x
2. Step 2: Convert to fraction form
   2,030.94/3,046.42 = 645.25/x
3. Step 3: Cross multiply
   2,030.94x = 3,046.42 × 645.25
4. Step 4: Simplify right side
   2,030.94x = 1,965,693.28
5. Step 5: Solve for x
   x = 1,965,693.28/2,030.94
6. Step 6: Final answer
   x = 967.87