Finding the Fourth Proportional to 2,581,078.56, 3,871,365.57 and 783,977.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581,078.56 : 3,871,365.57 = 783,977.64 : x
2. Step 2: Convert to fraction form
   2,581,078.56/3,871,365.57 = 783,977.64/x
3. Step 3: Cross multiply
   2,581,078.56x = 3,871,365.57 × 783,977.64
4. Step 4: Simplify right side
   2,581,078.56x = 3,035,064,043,145.85
5. Step 5: Solve for x
   x = 3,035,064,043,145.85/2,581,078.56
6. Step 6: Final answer
   x = 1,175,889.84