Finding the Fourth Proportional to 784,979.98, 1,083,441.20 and 478,990.82

Step by Step Solution

1. Step 1: Write the proportion equation
   784,979.98 : 1,083,441.20 = 478,990.82 : x
2. Step 2: Convert to fraction form
   784,979.98/1,083,441.20 = 478,990.82/x
3. Step 3: Cross multiply
   784,979.98x = 1,083,441.20 × 478,990.82
4. Step 4: Simplify right side
   784,979.98x = 518,958,388,809.78
5. Step 5: Solve for x
   x = 518,958,388,809.78/784,979.98
6. Step 6: Final answer
   x = 661,110.35