Finding the Fourth Proportional to 1,265.88, 1,897.46 and 648.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,265.88 : 1,897.46 = 648.94 : x
2. Step 2: Convert to fraction form
   1,265.88/1,897.46 = 648.94/x
3. Step 3: Cross multiply
   1,265.88x = 1,897.46 × 648.94
4. Step 4: Simplify right side
   1,265.88x = 1,231,337.69
5. Step 5: Solve for x
   x = 1,231,337.69/1,265.88
6. Step 6: Final answer
   x = 972.71