Finding the Fourth Proportional to 1,019,810.94, 1,528,593.51 and 420,443.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019,810.94 : 1,528,593.51 = 420,443.34 : x
2. Step 2: Convert to fraction form
   1,019,810.94/1,528,593.51 = 420,443.34/x
3. Step 3: Cross multiply
   1,019,810.94x = 1,528,593.51 × 420,443.34
4. Step 4: Simplify right side
   1,019,810.94x = 642,686,960,846.72
5. Step 5: Solve for x
   x = 642,686,960,846.72/1,019,810.94
6. Step 6: Final answer
   x = 630,202.07