Finding the Fourth Proportional to 1,325,128.72, 1,987,456.26 and 352,498.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,325,128.72 : 1,987,456.26 = 352,498.27 : x
2. Step 2: Convert to fraction form
   1,325,128.72/1,987,456.26 = 352,498.27/x
3. Step 3: Cross multiply
   1,325,128.72x = 1,987,456.26 × 352,498.27
4. Step 4: Simplify right side
   1,325,128.72x = 700,574,889,148.40
5. Step 5: Solve for x
   x = 700,574,889,148.40/1,325,128.72
6. Step 6: Final answer
   x = 528,684.41