Finding the Fourth Proportional to 1,212,109, 1,818,426 and 464,155

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212,109 : 1,818,426 = 464,155 : x
2. Step 2: Convert to fraction form
   1,212,109/1,818,426 = 464,155/x
3. Step 3: Cross multiply
   1,212,109x = 1,818,426 × 464,155
4. Step 4: Simplify right side
   1,212,109x = 844,031,520,030
5. Step 5: Solve for x
   x = 844,031,520,030/1,212,109
6. Step 6: Final answer
   x = 696,333.02