Finding the Fourth Proportional to 2,147.60, 2,964.12 and 1,401.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.60 : 2,964.12 = 1,401.68 : x
2. Step 2: Convert to fraction form
   2,147.60/2,964.12 = 1,401.68/x
3. Step 3: Cross multiply
   2,147.60x = 2,964.12 × 1,401.68
4. Step 4: Simplify right side
   2,147.60x = 4,154,747.72
5. Step 5: Solve for x
   x = 4,154,747.72/2,147.60
6. Step 6: Final answer
   x = 1,934.60