Finding the Fourth Proportional to 2,629,328.65, 3,943,597.79 and 831,978.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,629,328.65 : 3,943,597.79 = 831,978.54 : x
2. Step 2: Convert to fraction form
   2,629,328.65/3,943,597.79 = 831,978.54/x
3. Step 3: Cross multiply
   2,629,328.65x = 3,943,597.79 × 831,978.54
4. Step 4: Simplify right side
   2,629,328.65x = 3,280,988,733,751.37
5. Step 5: Solve for x
   x = 3,280,988,733,751.37/2,629,328.65
6. Step 6: Final answer
   x = 1,247,842.77