Finding the Fourth Proportional to 2,221.91, 3,064.46 and 1,434.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.91 : 3,064.46 = 1,434.59 : x
2. Step 2: Convert to fraction form
   2,221.91/3,064.46 = 1,434.59/x
3. Step 3: Cross multiply
   2,221.91x = 3,064.46 × 1,434.59
4. Step 4: Simplify right side
   2,221.91x = 4,396,221.18
5. Step 5: Solve for x
   x = 4,396,221.18/2,221.91
6. Step 6: Final answer
   x = 1,978.58