Finding the Fourth Proportional to 3,440.88, 5,158.56 and 1,491.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,440.88 : 5,158.56 = 1,491.72 : x
2. Step 2: Convert to fraction form
   3,440.88/5,158.56 = 1,491.72/x
3. Step 3: Cross multiply
   3,440.88x = 5,158.56 × 1,491.72
4. Step 4: Simplify right side
   3,440.88x = 7,695,127.12
5. Step 5: Solve for x
   x = 7,695,127.12/3,440.88
6. Step 6: Final answer
   x = 2,236.38