Finding the Fourth Proportional to 2,141,515.56, 3,207,990.60 and 1,288,116

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141,515.56 : 3,207,990.60 = 1,288,116 : x
2. Step 2: Convert to fraction form
   2,141,515.56/3,207,990.60 = 1,288,116/x
3. Step 3: Cross multiply
   2,141,515.56x = 3,207,990.60 × 1,288,116
4. Step 4: Simplify right side
   2,141,515.56x = 4,132,264,019,709.60
5. Step 5: Solve for x
   x = 4,132,264,019,709.60/2,141,515.56
6. Step 6: Final answer
   x = 1,929,597.94