Finding the Fourth Proportional to 628,540.16, 867,404.98 and 356,619.52

Step by Step Solution

1. Step 1: Write the proportion equation
   628,540.16 : 867,404.98 = 356,619.52 : x
2. Step 2: Convert to fraction form
   628,540.16/867,404.98 = 356,619.52/x
3. Step 3: Cross multiply
   628,540.16x = 867,404.98 × 356,619.52
4. Step 4: Simplify right side
   628,540.16x = 309,333,547,613.21
5. Step 5: Solve for x
   x = 309,333,547,613.21/628,540.16
6. Step 6: Final answer
   x = 492,146.04