Finding the Fourth Proportional to 2,111.60, 3,163.80 and 1,744.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.60 : 3,163.80 = 1,744.40 : x
2. Step 2: Convert to fraction form
   2,111.60/3,163.80 = 1,744.40/x
3. Step 3: Cross multiply
   2,111.60x = 3,163.80 × 1,744.40
4. Step 4: Simplify right side
   2,111.60x = 5,518,932.72
5. Step 5: Solve for x
   x = 5,518,932.72/2,111.60
6. Step 6: Final answer
   x = 2,613.63