Finding the Fourth Proportional to 2,657,075.43, 3,986,245.56 and 859,958.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657,075.43 : 3,986,245.56 = 859,958.91 : x
2. Step 2: Convert to fraction form
   2,657,075.43/3,986,245.56 = 859,958.91/x
3. Step 3: Cross multiply
   2,657,075.43x = 3,986,245.56 × 859,958.91
4. Step 4: Simplify right side
   2,657,075.43x = 3,428,007,386,769.94
5. Step 5: Solve for x
   x = 3,428,007,386,769.94/2,657,075.43
6. Step 6: Final answer
   x = 1,290,143.05