Finding the Fourth Proportional to 1,213,631.53, 1,820,743.69 and 404,014.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,213,631.53 : 1,820,743.69 = 404,014.38 : x
2. Step 2: Convert to fraction form
   1,213,631.53/1,820,743.69 = 404,014.38/x
3. Step 3: Cross multiply
   1,213,631.53x = 1,820,743.69 × 404,014.38
4. Step 4: Simplify right side
   1,213,631.53x = 735,606,632,044.23
5. Step 5: Solve for x
   x = 735,606,632,044.23/1,213,631.53
6. Step 6: Final answer
   x = 606,120.24