Finding the Fourth Proportional to 721,061.37, 994,764 and 415,064.53

Step by Step Solution

1. Step 1: Write the proportion equation
   721,061.37 : 994,764 = 415,064.53 : x
2. Step 2: Convert to fraction form
   721,061.37/994,764 = 415,064.53/x
3. Step 3: Cross multiply
   721,061.37x = 994,764 × 415,064.53
4. Step 4: Simplify right side
   721,061.37x = 412,891,252,120.92
5. Step 5: Solve for x
   x = 412,891,252,120.92/721,061.37
6. Step 6: Final answer
   x = 572,615.96