Finding the Fourth Proportional to 2,647,173, 3,970,384.56 and 849,819.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647,173 : 3,970,384.56 = 849,819.78 : x
2. Step 2: Convert to fraction form
   2,647,173/3,970,384.56 = 849,819.78/x
3. Step 3: Cross multiply
   2,647,173x = 3,970,384.56 × 849,819.78
4. Step 4: Simplify right side
   2,647,173x = 3,374,111,333,294.60
5. Step 5: Solve for x
   x = 3,374,111,333,294.60/2,647,173
6. Step 6: Final answer
   x = 1,274,609.30