Finding the Fourth Proportional to 2,116.56, 3,171.35 and 729.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.56 : 3,171.35 = 729.14 : x
2. Step 2: Convert to fraction form
   2,116.56/3,171.35 = 729.14/x
3. Step 3: Cross multiply
   2,116.56x = 3,171.35 × 729.14
4. Step 4: Simplify right side
   2,116.56x = 2,312,367.89
5. Step 5: Solve for x
   x = 2,312,367.89/2,116.56
6. Step 6: Final answer
   x = 1,092.51