Finding the Fourth Proportional to 2,227.40, 3,075.25 and 1,431.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,227.40 : 3,075.25 = 1,431.08 : x
2. Step 2: Convert to fraction form
   2,227.40/3,075.25 = 1,431.08/x
3. Step 3: Cross multiply
   2,227.40x = 3,075.25 × 1,431.08
4. Step 4: Simplify right side
   2,227.40x = 4,400,928.77
5. Step 5: Solve for x
   x = 4,400,928.77/2,227.40
6. Step 6: Final answer
   x = 1,975.81