Finding the Fourth Proportional to 909,268, 1,254,789.92 and 506,860

Step by Step Solution

1. Step 1: Write the proportion equation
   909,268 : 1,254,789.92 = 506,860 : x
2. Step 2: Convert to fraction form
   909,268/1,254,789.92 = 506,860/x
3. Step 3: Cross multiply
   909,268x = 1,254,789.92 × 506,860
4. Step 4: Simplify right side
   909,268x = 636,002,818,851.20
5. Step 5: Solve for x
   x = 636,002,818,851.20/909,268
6. Step 6: Final answer
   x = 699,466.84