Finding the Fourth Proportional to 2,538,660.64, 3,808,986.72 and 1,117,720

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538,660.64 : 3,808,986.72 = 1,117,720 : x
2. Step 2: Convert to fraction form
   2,538,660.64/3,808,986.72 = 1,117,720/x
3. Step 3: Cross multiply
   2,538,660.64x = 3,808,986.72 × 1,117,720
4. Step 4: Simplify right side
   2,538,660.64x = 4,257,380,636,678.40
5. Step 5: Solve for x
   x = 4,257,380,636,678.40/2,538,660.64
6. Step 6: Final answer
   x = 1,677,018.41