Finding the Fourth Proportional to 1,978,514.91, 2,965,778.55 and 779,973.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,514.91 : 2,965,778.55 = 779,973.30 : x
2. Step 2: Convert to fraction form
   1,978,514.91/2,965,778.55 = 779,973.30/x
3. Step 3: Cross multiply
   1,978,514.91x = 2,965,778.55 × 779,973.30
4. Step 4: Simplify right side
   1,978,514.91x = 2,313,228,082,712.72
5. Step 5: Solve for x
   x = 2,313,228,082,712.72/1,978,514.91
6. Step 6: Final answer
   x = 1,169,173.95