Finding the Fourth Proportional to 740,019.98, 1,021,227.54 and 400,488.22

Step by Step Solution

1. Step 1: Write the proportion equation
   740,019.98 : 1,021,227.54 = 400,488.22 : x
2. Step 2: Convert to fraction form
   740,019.98/1,021,227.54 = 400,488.22/x
3. Step 3: Cross multiply
   740,019.98x = 1,021,227.54 × 400,488.22
4. Step 4: Simplify right side
   740,019.98x = 408,989,599,709.58
5. Step 5: Solve for x
   x = 408,989,599,709.58/740,019.98
6. Step 6: Final answer
   x = 552,673.73