Finding the Fourth Proportional to 1,644,131.90, 2,466,142.25 and 579,146.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644,131.90 : 2,466,142.25 = 579,146.12 : x
2. Step 2: Convert to fraction form
   1,644,131.90/2,466,142.25 = 579,146.12/x
3. Step 3: Cross multiply
   1,644,131.90x = 2,466,142.25 × 579,146.12
4. Step 4: Simplify right side
   1,644,131.90x = 1,428,256,715,455.57
5. Step 5: Solve for x
   x = 1,428,256,715,455.57/1,644,131.90
6. Step 6: Final answer
   x = 868,699.59