Finding the Fourth Proportional to 1,349,976.72, 1,863,139.25 and 769,408.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,349,976.72 : 1,863,139.25 = 769,408.55 : x
2. Step 2: Convert to fraction form
   1,349,976.72/1,863,139.25 = 769,408.55/x
3. Step 3: Cross multiply
   1,349,976.72x = 1,863,139.25 × 769,408.55
4. Step 4: Simplify right side
   1,349,976.72x = 1,433,515,268,790.59
5. Step 5: Solve for x
   x = 1,433,515,268,790.59/1,349,976.72
6. Step 6: Final answer
   x = 1,061,881.47