Finding the Fourth Proportional to 2,185,663.50, 3,016,215.63 and 1,280,245.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185,663.50 : 3,016,215.63 = 1,280,245.50 : x
2. Step 2: Convert to fraction form
   2,185,663.50/3,016,215.63 = 1,280,245.50/x
3. Step 3: Cross multiply
   2,185,663.50x = 3,016,215.63 × 1,280,245.50
4. Step 4: Simplify right side
   2,185,663.50x = 3,861,496,487,337.17
5. Step 5: Solve for x
   x = 3,861,496,487,337.17/2,185,663.50
6. Step 6: Final answer
   x = 1,766,738.79