Finding the Fourth Proportional to 2,105,451.47, 3,157,847.75 and 685,497.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,451.47 : 3,157,847.75 = 685,497.98 : x
2. Step 2: Convert to fraction form
   2,105,451.47/3,157,847.75 = 685,497.98/x
3. Step 3: Cross multiply
   2,105,451.47x = 3,157,847.75 × 685,497.98
4. Step 4: Simplify right side
   2,105,451.47x = 2,164,698,234,555.82
5. Step 5: Solve for x
   x = 2,164,698,234,555.82/2,105,451.47
6. Step 6: Final answer
   x = 1,028,139.70