Finding the Fourth Proportional to 2,431.02, 3,647.16 and 1,391.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.02 : 3,647.16 = 1,391.52 : x
2. Step 2: Convert to fraction form
   2,431.02/3,647.16 = 1,391.52/x
3. Step 3: Cross multiply
   2,431.02x = 3,647.16 × 1,391.52
4. Step 4: Simplify right side
   2,431.02x = 5,075,096.08
5. Step 5: Solve for x
   x = 5,075,096.08/2,431.02
6. Step 6: Final answer
   x = 2,087.64