Finding the Fourth Proportional to 3,435.34, 5,140.71 and 2,974.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,435.34 : 5,140.71 = 2,974.72 : x
2. Step 2: Convert to fraction form
   3,435.34/5,140.71 = 2,974.72/x
3. Step 3: Cross multiply
   3,435.34x = 5,140.71 × 2,974.72
4. Step 4: Simplify right side
   3,435.34x = 15,292,172.85
5. Step 5: Solve for x
   x = 15,292,172.85/3,435.34
6. Step 6: Final answer
   x = 4,451.43