Finding the Fourth Proportional to 1,644,131.40, 2,466,141.50 and 579,145.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644,131.40 : 2,466,141.50 = 579,145.62 : x
2. Step 2: Convert to fraction form
   1,644,131.40/2,466,141.50 = 579,145.62/x
3. Step 3: Cross multiply
   1,644,131.40x = 2,466,141.50 × 579,145.62
4. Step 4: Simplify right side
   1,644,131.40x = 1,428,255,048,025.23
5. Step 5: Solve for x
   x = 1,428,255,048,025.23/1,644,131.40
6. Step 6: Final answer
   x = 868,698.84