Finding the Fourth Proportional to 608,040.72, 838,980.72 and 381,584.16

Step by Step Solution

1. Step 1: Write the proportion equation
   608,040.72 : 838,980.72 = 381,584.16 : x
2. Step 2: Convert to fraction form
   608,040.72/838,980.72 = 381,584.16/x
3. Step 3: Cross multiply
   608,040.72x = 838,980.72 × 381,584.16
4. Step 4: Simplify right side
   608,040.72x = 320,141,753,297.40
5. Step 5: Solve for x
   x = 320,141,753,297.40/608,040.72
6. Step 6: Final answer
   x = 526,513.67