Finding the Fourth Proportional to 1,405,509.48, 2,109,131.37 and 552,431.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405,509.48 : 2,109,131.37 = 552,431.25 : x
2. Step 2: Convert to fraction form
   1,405,509.48/2,109,131.37 = 552,431.25/x
3. Step 3: Cross multiply
   1,405,509.48x = 2,109,131.37 × 552,431.25
4. Step 4: Simplify right side
   1,405,509.48x = 1,165,150,079,143.31
5. Step 5: Solve for x
   x = 1,165,150,079,143.31/1,405,509.48
6. Step 6: Final answer
   x = 828,987.71