Finding the Fourth Proportional to 1,401,815.31, 2,102,722.72 and 336,857.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401,815.31 : 2,102,722.72 = 336,857.37 : x
2. Step 2: Convert to fraction form
   1,401,815.31/2,102,722.72 = 336,857.37/x
3. Step 3: Cross multiply
   1,401,815.31x = 2,102,722.72 × 336,857.37
4. Step 4: Simplify right side
   1,401,815.31x = 708,317,645,298.45
5. Step 5: Solve for x
   x = 708,317,645,298.45/1,401,815.31
6. Step 6: Final answer
   x = 505,286.00