Finding the Fourth Proportional to 403,667.74, 557,628.06 and 382,410.10

Step by Step Solution

1. Step 1: Write the proportion equation
   403,667.74 : 557,628.06 = 382,410.10 : x
2. Step 2: Convert to fraction form
   403,667.74/557,628.06 = 382,410.10/x
3. Step 3: Cross multiply
   403,667.74x = 557,628.06 × 382,410.10
4. Step 4: Simplify right side
   403,667.74x = 213,242,602,187.41
5. Step 5: Solve for x
   x = 213,242,602,187.41/403,667.74
6. Step 6: Final answer
   x = 528,262.68