Finding the Fourth Proportional to 2,215.69, 3,057.95 and 1,429.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.69 : 3,057.95 = 1,429.58 : x
2. Step 2: Convert to fraction form
   2,215.69/3,057.95 = 1,429.58/x
3. Step 3: Cross multiply
   2,215.69x = 3,057.95 × 1,429.58
4. Step 4: Simplify right side
   2,215.69x = 4,371,595.38
5. Step 5: Solve for x
   x = 4,371,595.38/2,215.69
6. Step 6: Final answer
   x = 1,973.02