Finding the Fourth Proportional to 685,007.16, 1,026,388.72 and 364,819.10

Step by Step Solution

1. Step 1: Write the proportion equation
   685,007.16 : 1,026,388.72 = 364,819.10 : x
2. Step 2: Convert to fraction form
   685,007.16/1,026,388.72 = 364,819.10/x
3. Step 3: Cross multiply
   685,007.16x = 1,026,388.72 × 364,819.10
4. Step 4: Simplify right side
   685,007.16x = 374,446,209,080.55
5. Step 5: Solve for x
   x = 374,446,209,080.55/685,007.16
6. Step 6: Final answer
   x = 546,631.09