Finding the Fourth Proportional to 1,321,100.52, 1,823,108.44 and 717,488.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,100.52 : 1,823,108.44 = 717,488.52 : x
2. Step 2: Convert to fraction form
   1,321,100.52/1,823,108.44 = 717,488.52/x
3. Step 3: Cross multiply
   1,321,100.52x = 1,823,108.44 × 717,488.52
4. Step 4: Simplify right side
   1,321,100.52x = 1,308,059,363,712.12
5. Step 5: Solve for x
   x = 1,308,059,363,712.12/1,321,100.52
6. Step 6: Final answer
   x = 990,128.57