Finding the Fourth Proportional to 1,423,621.91, 1,964,598.42 and 779,042.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423,621.91 : 1,964,598.42 = 779,042.15 : x
2. Step 2: Convert to fraction form
   1,423,621.91/1,964,598.42 = 779,042.15/x
3. Step 3: Cross multiply
   1,423,621.91x = 1,964,598.42 × 779,042.15
4. Step 4: Simplify right side
   1,423,621.91x = 1,530,504,977,003.40
5. Step 5: Solve for x
   x = 1,530,504,977,003.40/1,423,621.91
6. Step 6: Final answer
   x = 1,075,078.27