Finding the Fourth Proportional to 1,039,814.16, 1,559,716.32 and 281,654.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039,814.16 : 1,559,716.32 = 281,654.16 : x
2. Step 2: Convert to fraction form
   1,039,814.16/1,559,716.32 = 281,654.16/x
3. Step 3: Cross multiply
   1,039,814.16x = 1,559,716.32 × 281,654.16
4. Step 4: Simplify right side
   1,039,814.16x = 439,300,589,947.89
5. Step 5: Solve for x
   x = 439,300,589,947.89/1,039,814.16
6. Step 6: Final answer
   x = 422,479.91