Finding the Fourth Proportional to 1,039,967.00, 1,559,949.78 and 391,665.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039,967.00 : 1,559,949.78 = 391,665.48 : x
2. Step 2: Convert to fraction form
   1,039,967.00/1,559,949.78 = 391,665.48/x
3. Step 3: Cross multiply
   1,039,967.00x = 1,559,949.78 × 391,665.48
4. Step 4: Simplify right side
   1,039,967.00x = 610,978,479,359.59
5. Step 5: Solve for x
   x = 610,978,479,359.59/1,039,967.00
6. Step 6: Final answer
   x = 587,497.95