Finding the Fourth Proportional to 739,936, 1,021,112.59 and 400,404.25

Step by Step Solution

1. Step 1: Write the proportion equation
   739,936 : 1,021,112.59 = 400,404.25 : x
2. Step 2: Convert to fraction form
   739,936/1,021,112.59 = 400,404.25/x
3. Step 3: Cross multiply
   739,936x = 1,021,112.59 × 400,404.25
4. Step 4: Simplify right side
   739,936x = 408,857,820,764.51
5. Step 5: Solve for x
   x = 408,857,820,764.51/739,936
6. Step 6: Final answer
   x = 552,558.36