Finding the Fourth Proportional to 1,295.29, 1,941.72 and 645.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,295.29 : 1,941.72 = 645.31 : x
2. Step 2: Convert to fraction form
   1,295.29/1,941.72 = 645.31/x
3. Step 3: Cross multiply
   1,295.29x = 1,941.72 × 645.31
4. Step 4: Simplify right side
   1,295.29x = 1,253,011.33
5. Step 5: Solve for x
   x = 1,253,011.33/1,295.29
6. Step 6: Final answer
   x = 967.36