Finding the Fourth Proportional to 1,015,208.22, 1,401,134.31 and 585,402.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015,208.22 : 1,401,134.31 = 585,402.78 : x
2. Step 2: Convert to fraction form
   1,015,208.22/1,401,134.31 = 585,402.78/x
3. Step 3: Cross multiply
   1,015,208.22x = 1,401,134.31 × 585,402.78
4. Step 4: Simplify right side
   1,015,208.22x = 820,227,920,227.38
5. Step 5: Solve for x
   x = 820,227,920,227.38/1,015,208.22
6. Step 6: Final answer
   x = 807,940.58