Finding the Fourth Proportional to 2,892.40, 4,317.56 and 2,689.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.40 : 4,317.56 = 2,689.84 : x
2. Step 2: Convert to fraction form
   2,892.40/4,317.56 = 2,689.84/x
3. Step 3: Cross multiply
   2,892.40x = 4,317.56 × 2,689.84
4. Step 4: Simplify right side
   2,892.40x = 11,613,545.59
5. Step 5: Solve for x
   x = 11,613,545.59/2,892.40
6. Step 6: Final answer
   x = 4,015.19