Finding the Fourth Proportional to 1,359.81, 2,029.43 and 1,228.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.81 : 2,029.43 = 1,228.59 : x
2. Step 2: Convert to fraction form
   1,359.81/2,029.43 = 1,228.59/x
3. Step 3: Cross multiply
   1,359.81x = 2,029.43 × 1,228.59
4. Step 4: Simplify right side
   1,359.81x = 2,493,337.40
5. Step 5: Solve for x
   x = 2,493,337.40/1,359.81
6. Step 6: Final answer
   x = 1,833.59