Finding the Fourth Proportional to 931,812.12, 1,397,667.96 and 300,726

Step by Step Solution

1. Step 1: Write the proportion equation
   931,812.12 : 1,397,667.96 = 300,726 : x
2. Step 2: Convert to fraction form
   931,812.12/1,397,667.96 = 300,726/x
3. Step 3: Cross multiply
   931,812.12x = 1,397,667.96 × 300,726
4. Step 4: Simplify right side
   931,812.12x = 420,315,094,938.96
5. Step 5: Solve for x
   x = 420,315,094,938.96/931,812.12
6. Step 6: Final answer
   x = 451,072.79