Finding the Fourth Proportional to 1,075,020.21, 1,612,533.63 and 265,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,075,020.21 : 1,612,533.63 = 265,404.72 : x
2. Step 2: Convert to fraction form
   1,075,020.21/1,612,533.63 = 265,404.72/x
3. Step 3: Cross multiply
   1,075,020.21x = 1,612,533.63 × 265,404.72
4. Step 4: Simplify right side
   1,075,020.21x = 427,974,040,578.27
5. Step 5: Solve for x
   x = 427,974,040,578.27/1,075,020.21
6. Step 6: Final answer
   x = 398,107.90