Finding the Fourth Proportional to 684,864, 945,116 and 383,057.92

Step by Step Solution

1. Step 1: Write the proportion equation
   684,864 : 945,116 = 383,057.92 : x
2. Step 2: Convert to fraction form
   684,864/945,116 = 383,057.92/x
3. Step 3: Cross multiply
   684,864x = 945,116 × 383,057.92
4. Step 4: Simplify right side
   684,864x = 362,034,169,118.72
5. Step 5: Solve for x
   x = 362,034,169,118.72/684,864
6. Step 6: Final answer
   x = 528,621.99