Finding the Fourth Proportional to 1,036,550.58, 1,555,021.89 and 405,424.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036,550.58 : 1,555,021.89 = 405,424.50 : x
2. Step 2: Convert to fraction form
   1,036,550.58/1,555,021.89 = 405,424.50/x
3. Step 3: Cross multiply
   1,036,550.58x = 1,555,021.89 × 405,424.50
4. Step 4: Simplify right side
   1,036,550.58x = 630,443,972,242.31
5. Step 5: Solve for x
   x = 630,443,972,242.31/1,036,550.58
6. Step 6: Final answer
   x = 608,213.42