Finding the Fourth Proportional to 1,152,404.94, 1,728,201.61 and 383,693.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,404.94 : 1,728,201.61 = 383,693.90 : x
2. Step 2: Convert to fraction form
   1,152,404.94/1,728,201.61 = 383,693.90/x
3. Step 3: Cross multiply
   1,152,404.94x = 1,728,201.61 × 383,693.90
4. Step 4: Simplify right side
   1,152,404.94x = 663,100,407,835.60
5. Step 5: Solve for x
   x = 663,100,407,835.60/1,152,404.94
6. Step 6: Final answer
   x = 575,405.73