Finding the Fourth Proportional to 538,300.19, 806,688.59 and 298,519.56

Step by Step Solution

1. Step 1: Write the proportion equation
   538,300.19 : 806,688.59 = 298,519.56 : x
2. Step 2: Convert to fraction form
   538,300.19/806,688.59 = 298,519.56/x
3. Step 3: Cross multiply
   538,300.19x = 806,688.59 × 298,519.56
4. Step 4: Simplify right side
   538,300.19x = 240,812,321,451.22
5. Step 5: Solve for x
   x = 240,812,321,451.22/538,300.19
6. Step 6: Final answer
   x = 447,356.94