Finding the Fourth Proportional to 2,618,892.98, 3,928,505.56 and 821,847.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618,892.98 : 3,928,505.56 = 821,847.32 : x
2. Step 2: Convert to fraction form
   2,618,892.98/3,928,505.56 = 821,847.32/x
3. Step 3: Cross multiply
   2,618,892.98x = 3,928,505.56 × 821,847.32
4. Step 4: Simplify right side
   2,618,892.98x = 3,228,631,766,091.10
5. Step 5: Solve for x
   x = 3,228,631,766,091.10/2,618,892.98
6. Step 6: Final answer
   x = 1,232,823.10