Finding the Fourth Proportional to 861,314.50, 1,291,982.69 and 300,349

Step by Step Solution

1. Step 1: Write the proportion equation
   861,314.50 : 1,291,982.69 = 300,349 : x
2. Step 2: Convert to fraction form
   861,314.50/1,291,982.69 = 300,349/x
3. Step 3: Cross multiply
   861,314.50x = 1,291,982.69 × 300,349
4. Step 4: Simplify right side
   861,314.50x = 388,045,708,958.81
5. Step 5: Solve for x
   x = 388,045,708,958.81/861,314.50
6. Step 6: Final answer
   x = 450,527.31