Finding the Fourth Proportional to 3,981,667.50, 5,972,523.12 and 989,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981,667.50 : 5,972,523.12 = 989,851.50 : x
2. Step 2: Convert to fraction form
   3,981,667.50/5,972,523.12 = 989,851.50/x
3. Step 3: Cross multiply
   3,981,667.50x = 5,972,523.12 × 989,851.50
4. Step 4: Simplify right side
   3,981,667.50x = 5,911,910,969,116.68
5. Step 5: Solve for x
   x = 5,911,910,969,116.68/3,981,667.50
6. Step 6: Final answer
   x = 1,484,782.69