Finding the Fourth Proportional to 2,271.09, 3,134.03 and 1,388.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.09 : 3,134.03 = 1,388.37 : x
2. Step 2: Convert to fraction form
   2,271.09/3,134.03 = 1,388.37/x
3. Step 3: Cross multiply
   2,271.09x = 3,134.03 × 1,388.37
4. Step 4: Simplify right side
   2,271.09x = 4,351,186.29
5. Step 5: Solve for x
   x = 4,351,186.29/2,271.09
6. Step 6: Final answer
   x = 1,915.90