Finding the Fourth Proportional to 2,166.06, 3,242.76 and 1,613.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.06 : 3,242.76 = 1,613.22 : x
2. Step 2: Convert to fraction form
   2,166.06/3,242.76 = 1,613.22/x
3. Step 3: Cross multiply
   2,166.06x = 3,242.76 × 1,613.22
4. Step 4: Simplify right side
   2,166.06x = 5,231,285.29
5. Step 5: Solve for x
   x = 5,231,285.29/2,166.06
6. Step 6: Final answer
   x = 2,415.12