Finding the Fourth Proportional to 2,612,789.82, 3,918,804.56 and 815,255.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612,789.82 : 3,918,804.56 = 815,255.10 : x
2. Step 2: Convert to fraction form
   2,612,789.82/3,918,804.56 = 815,255.10/x
3. Step 3: Cross multiply
   2,612,789.82x = 3,918,804.56 × 815,255.10
4. Step 4: Simplify right side
   2,612,789.82x = 3,194,825,403,443.26
5. Step 5: Solve for x
   x = 3,194,825,403,443.26/2,612,789.82
6. Step 6: Final answer
   x = 1,222,764.03