Finding the Fourth Proportional to 1,359.45, 2,037.59 and 1,205.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.45 : 2,037.59 = 1,205.69 : x
2. Step 2: Convert to fraction form
   1,359.45/2,037.59 = 1,205.69/x
3. Step 3: Cross multiply
   1,359.45x = 2,037.59 × 1,205.69
4. Step 4: Simplify right side
   1,359.45x = 2,456,685.67
5. Step 5: Solve for x
   x = 2,456,685.67/1,359.45
6. Step 6: Final answer
   x = 1,807.12