Finding the Fourth Proportional to 1,260,097.98, 1,890,336.56 and 406,883.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,260,097.98 : 1,890,336.56 = 406,883.67 : x
2. Step 2: Convert to fraction form
   1,260,097.98/1,890,336.56 = 406,883.67/x
3. Step 3: Cross multiply
   1,260,097.98x = 1,890,336.56 × 406,883.67
4. Step 4: Simplify right side
   1,260,097.98x = 769,147,077,067.98
5. Step 5: Solve for x
   x = 769,147,077,067.98/1,260,097.98
6. Step 6: Final answer
   x = 610,386.72