Finding the Fourth Proportional to 1,051,003.36, 1,576,591.92 and 451,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051,003.36 : 1,576,591.92 = 451,978.72 : x
2. Step 2: Convert to fraction form
   1,051,003.36/1,576,591.92 = 451,978.72/x
3. Step 3: Cross multiply
   1,051,003.36x = 1,576,591.92 × 451,978.72
4. Step 4: Simplify right side
   1,051,003.36x = 712,585,997,963.94
5. Step 5: Solve for x
   x = 712,585,997,963.94/1,051,003.36
6. Step 6: Final answer
   x = 678,005.44