Finding the Fourth Proportional to 738,200.53, 1,018,690.72 and 415,978.21

Step by Step Solution

1. Step 1: Write the proportion equation
   738,200.53 : 1,018,690.72 = 415,978.21 : x
2. Step 2: Convert to fraction form
   738,200.53/1,018,690.72 = 415,978.21/x
3. Step 3: Cross multiply
   738,200.53x = 1,018,690.72 × 415,978.21
4. Step 4: Simplify right side
   738,200.53x = 423,753,142,249.21
5. Step 5: Solve for x
   x = 423,753,142,249.21/738,200.53
6. Step 6: Final answer
   x = 574,035.27