Finding the Fourth Proportional to 1,018,300.50, 1,405,298.46 and 565,591.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,300.50 : 1,405,298.46 = 565,591.50 : x
2. Step 2: Convert to fraction form
   1,018,300.50/1,405,298.46 = 565,591.50/x
3. Step 3: Cross multiply
   1,018,300.50x = 1,405,298.46 × 565,591.50
4. Step 4: Simplify right side
   1,018,300.50x = 794,824,863,939.09
5. Step 5: Solve for x
   x = 794,824,863,939.09/1,018,300.50
6. Step 6: Final answer
   x = 780,540.58