Finding the Fourth Proportional to 670,185.30, 1,006,055.55 and 404,246.10

Step by Step Solution

1. Step 1: Write the proportion equation
   670,185.30 : 1,006,055.55 = 404,246.10 : x
2. Step 2: Convert to fraction form
   670,185.30/1,006,055.55 = 404,246.10/x
3. Step 3: Cross multiply
   670,185.30x = 1,006,055.55 × 404,246.10
4. Step 4: Simplify right side
   670,185.30x = 406,694,032,470.86
5. Step 5: Solve for x
   x = 406,694,032,470.86/670,185.30
6. Step 6: Final answer
   x = 606,838.19