Finding the Fourth Proportional to 2,226.42, 3,074.34 and 1,387.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,226.42 : 3,074.34 = 1,387.47 : x
2. Step 2: Convert to fraction form
   2,226.42/3,074.34 = 1,387.47/x
3. Step 3: Cross multiply
   2,226.42x = 3,074.34 × 1,387.47
4. Step 4: Simplify right side
   2,226.42x = 4,265,554.52
5. Step 5: Solve for x
   x = 4,265,554.52/2,226.42
6. Step 6: Final answer
   x = 1,915.88