Finding the Fourth Proportional to 1,109,421.72, 1,530,737.69 and 765,147.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109,421.72 : 1,530,737.69 = 765,147.60 : x
2. Step 2: Convert to fraction form
   1,109,421.72/1,530,737.69 = 765,147.60/x
3. Step 3: Cross multiply
   1,109,421.72x = 1,530,737.69 × 765,147.60
4. Step 4: Simplify right side
   1,109,421.72x = 1,171,240,265,907.31
5. Step 5: Solve for x
   x = 1,171,240,265,907.31/1,109,421.72
6. Step 6: Final answer
   x = 1,055,721.41