Finding the Fourth Proportional to 806,100.37, 1,209,908.11 and 422,124.83

Step by Step Solution

1. Step 1: Write the proportion equation
   806,100.37 : 1,209,908.11 = 422,124.83 : x
2. Step 2: Convert to fraction form
   806,100.37/1,209,908.11 = 422,124.83/x
3. Step 3: Cross multiply
   806,100.37x = 1,209,908.11 × 422,124.83
4. Step 4: Simplify right side
   806,100.37x = 510,732,249,199.83
5. Step 5: Solve for x
   x = 510,732,249,199.83/806,100.37
6. Step 6: Final answer
   x = 633,583.94