Finding the Fourth Proportional to 693,145.87, 1,039,837.04 and 309,034.10

Step by Step Solution

1. Step 1: Write the proportion equation
   693,145.87 : 1,039,837.04 = 309,034.10 : x
2. Step 2: Convert to fraction form
   693,145.87/1,039,837.04 = 309,034.10/x
3. Step 3: Cross multiply
   693,145.87x = 1,039,837.04 × 309,034.10
4. Step 4: Simplify right side
   693,145.87x = 321,345,105,147.21
5. Step 5: Solve for x
   x = 321,345,105,147.21/693,145.87
6. Step 6: Final answer
   x = 463,603.86