Finding the Fourth Proportional to 2,613.51, 3,605.04 and 2,116.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.51 : 3,605.04 = 2,116.17 : x
2. Step 2: Convert to fraction form
   2,613.51/3,605.04 = 2,116.17/x
3. Step 3: Cross multiply
   2,613.51x = 3,605.04 × 2,116.17
4. Step 4: Simplify right side
   2,613.51x = 7,628,877.50
5. Step 5: Solve for x
   x = 7,628,877.50/2,613.51
6. Step 6: Final answer
   x = 2,919.02