Finding the Fourth Proportional to 1,000,164.06, 1,499,979.60 and 280,466.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,000,164.06 : 1,499,979.60 = 280,466.10 : x
2. Step 2: Convert to fraction form
   1,000,164.06/1,499,979.60 = 280,466.10/x
3. Step 3: Cross multiply
   1,000,164.06x = 1,499,979.60 × 280,466.10
4. Step 4: Simplify right side
   1,000,164.06x = 420,693,428,491.56
5. Step 5: Solve for x
   x = 420,693,428,491.56/1,000,164.06
6. Step 6: Final answer
   x = 420,624.42