Finding the Fourth Proportional to 2,141,624.87, 3,210,839.49 and 1,288,496.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141,624.87 : 3,210,839.49 = 1,288,496.60 : x
2. Step 2: Convert to fraction form
   2,141,624.87/3,210,839.49 = 1,288,496.60/x
3. Step 3: Cross multiply
   2,141,624.87x = 3,210,839.49 × 1,288,496.60
4. Step 4: Simplify right side
   2,141,624.87x = 4,137,155,749,956.54
5. Step 5: Solve for x
   x = 4,137,155,749,956.54/2,141,624.87
6. Step 6: Final answer
   x = 1,931,783.58