Finding the Fourth Proportional to 2,631,181, 3,947,395.50 and 858,253

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631,181 : 3,947,395.50 = 858,253 : x
2. Step 2: Convert to fraction form
   2,631,181/3,947,395.50 = 858,253/x
3. Step 3: Cross multiply
   2,631,181x = 3,947,395.50 × 858,253
4. Step 4: Simplify right side
   2,631,181x = 3,387,864,030,061.50
5. Step 5: Solve for x
   x = 3,387,864,030,061.50/2,631,181
6. Step 6: Final answer
   x = 1,287,583.04