Finding the Fourth Proportional to 456,784.90, 685,173.56 and 357,028.94

Step by Step Solution

1. Step 1: Write the proportion equation
   456,784.90 : 685,173.56 = 357,028.94 : x
2. Step 2: Convert to fraction form
   456,784.90/685,173.56 = 357,028.94/x
3. Step 3: Cross multiply
   456,784.90x = 685,173.56 × 357,028.94
4. Step 4: Simplify right side
   456,784.90x = 244,626,789,842.83
5. Step 5: Solve for x
   x = 244,626,789,842.83/456,784.90
6. Step 6: Final answer
   x = 535,540.45