Finding the Fourth Proportional to 684,630.72, 1,026,090.72 and 329,549.76

Step by Step Solution

1. Step 1: Write the proportion equation
   684,630.72 : 1,026,090.72 = 329,549.76 : x
2. Step 2: Convert to fraction form
   684,630.72/1,026,090.72 = 329,549.76/x
3. Step 3: Cross multiply
   684,630.72x = 1,026,090.72 × 329,549.76
4. Step 4: Simplify right side
   684,630.72x = 338,147,950,514.23
5. Step 5: Solve for x
   x = 338,147,950,514.23/684,630.72
6. Step 6: Final answer
   x = 493,912.91