Finding the Fourth Proportional to 804,902.90, 1,207,500.15 and 404,536.10

Step by Step Solution

1. Step 1: Write the proportion equation
   804,902.90 : 1,207,500.15 = 404,536.10 : x
2. Step 2: Convert to fraction form
   804,902.90/1,207,500.15 = 404,536.10/x
3. Step 3: Cross multiply
   804,902.90x = 1,207,500.15 × 404,536.10
4. Step 4: Simplify right side
   804,902.90x = 488,477,401,430.42
5. Step 5: Solve for x
   x = 488,477,401,430.42/804,902.90
6. Step 6: Final answer
   x = 606,877.43