Finding the Fourth Proportional to 659,426.86, 909,989.51 and 365,089.69

Step by Step Solution

1. Step 1: Write the proportion equation
   659,426.86 : 909,989.51 = 365,089.69 : x
2. Step 2: Convert to fraction form
   659,426.86/909,989.51 = 365,089.69/x
3. Step 3: Cross multiply
   659,426.86x = 909,989.51 × 365,089.69
4. Step 4: Simplify right side
   659,426.86x = 332,227,788,109.15
5. Step 5: Solve for x
   x = 332,227,788,109.15/659,426.86
6. Step 6: Final answer
   x = 503,812.94