Finding the Fourth Proportional to 806,872, 1,113,561.12 and 449,176

Step by Step Solution

1. Step 1: Write the proportion equation
   806,872 : 1,113,561.12 = 449,176 : x
2. Step 2: Convert to fraction form
   806,872/1,113,561.12 = 449,176/x
3. Step 3: Cross multiply
   806,872x = 1,113,561.12 × 449,176
4. Step 4: Simplify right side
   806,872x = 500,184,929,637.12
5. Step 5: Solve for x
   x = 500,184,929,637.12/806,872
6. Step 6: Final answer
   x = 619,906.17