Finding the Fourth Proportional to 806,601, 1,113,109.38 and 448,989.48

Step by Step Solution

1. Step 1: Write the proportion equation
   806,601 : 1,113,109.38 = 448,989.48 : x
2. Step 2: Convert to fraction form
   806,601/1,113,109.38 = 448,989.48/x
3. Step 3: Cross multiply
   806,601x = 1,113,109.38 × 448,989.48
4. Step 4: Simplify right side
   806,601x = 499,774,401,709.32
5. Step 5: Solve for x
   x = 499,774,401,709.32/806,601
6. Step 6: Final answer
   x = 619,605.48