Finding the Fourth Proportional to 671,066.20, 926,109.67 and 384,634.00

Step by Step Solution

1. Step 1: Write the proportion equation
   671,066.20 : 926,109.67 = 384,634.00 : x
2. Step 2: Convert to fraction form
   671,066.20/926,109.67 = 384,634.00/x
3. Step 3: Cross multiply
   671,066.20x = 926,109.67 × 384,634.00
4. Step 4: Simplify right side
   671,066.20x = 356,213,262,180.23
5. Step 5: Solve for x
   x = 356,213,262,180.23/671,066.20
6. Step 6: Final answer
   x = 530,816.88