Finding the Fourth Proportional to 654,978.05, 903,796.57 and 368,491.98

Step by Step Solution

1. Step 1: Write the proportion equation
   654,978.05 : 903,796.57 = 368,491.98 : x
2. Step 2: Convert to fraction form
   654,978.05/903,796.57 = 368,491.98/x
3. Step 3: Cross multiply
   654,978.05x = 903,796.57 × 368,491.98
4. Step 4: Simplify right side
   654,978.05x = 333,041,788,057.12
5. Step 5: Solve for x
   x = 333,041,788,057.12/654,978.05
6. Step 6: Final answer
   x = 508,477.79