Finding the Fourth Proportional to 2,580,779.82, 3,870,919.41 and 783,678.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580,779.82 : 3,870,919.41 = 783,678.84 : x
2. Step 2: Convert to fraction form
   2,580,779.82/3,870,919.41 = 783,678.84/x
3. Step 3: Cross multiply
   2,580,779.82x = 3,870,919.41 × 783,678.84
4. Step 4: Simplify right side
   2,580,779.82x = 3,033,557,632,962.28
5. Step 5: Solve for x
   x = 3,033,557,632,962.28/2,580,779.82
6. Step 6: Final answer
   x = 1,175,442.25