Finding the Fourth Proportional to 3,981,040.50, 5,971,560.76 and 1,321,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981,040.50 : 5,971,560.76 = 1,321,648.50 : x
2. Step 2: Convert to fraction form
   3,981,040.50/5,971,560.76 = 1,321,648.50/x
3. Step 3: Cross multiply
   3,981,040.50x = 5,971,560.76 × 1,321,648.50
4. Step 4: Simplify right side
   3,981,040.50x = 7,892,304,321,112.86
5. Step 5: Solve for x
   x = 7,892,304,321,112.86/3,981,040.50
6. Step 6: Final answer
   x = 1,982,472.75