Finding the Fourth Proportional to 3,275.16, 4,909.69 and 1,083.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,275.16 : 4,909.69 = 1,083.40 : x
2. Step 2: Convert to fraction form
   3,275.16/4,909.69 = 1,083.40/x
3. Step 3: Cross multiply
   3,275.16x = 4,909.69 × 1,083.40
4. Step 4: Simplify right side
   3,275.16x = 5,319,158.15
5. Step 5: Solve for x
   x = 5,319,158.15/3,275.16
6. Step 6: Final answer
   x = 1,624.09