Finding the Fourth Proportional to 2,205.15, 3,042.89 and 1,320.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.15 : 3,042.89 = 1,320.93 : x
2. Step 2: Convert to fraction form
   2,205.15/3,042.89 = 1,320.93/x
3. Step 3: Cross multiply
   2,205.15x = 3,042.89 × 1,320.93
4. Step 4: Simplify right side
   2,205.15x = 4,019,454.45
5. Step 5: Solve for x
   x = 4,019,454.45/2,205.15
6. Step 6: Final answer
   x = 1,822.75