Finding the Fourth Proportional to 1,861,559.98, 2,790,740.72 and 646,978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861,559.98 : 2,790,740.72 = 646,978.82 : x
2. Step 2: Convert to fraction form
   1,861,559.98/2,790,740.72 = 646,978.82/x
3. Step 3: Cross multiply
   1,861,559.98x = 2,790,740.72 × 646,978.82
4. Step 4: Simplify right side
   1,861,559.98x = 1,805,550,149,759.60
5. Step 5: Solve for x
   x = 1,805,550,149,759.60/1,861,559.98
6. Step 6: Final answer
   x = 969,912.42