Finding the Fourth Proportional to 2,545.83, 3,513.28 and 1,661.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.83 : 3,513.28 = 1,661.12 : x
2. Step 2: Convert to fraction form
   2,545.83/3,513.28 = 1,661.12/x
3. Step 3: Cross multiply
   2,545.83x = 3,513.28 × 1,661.12
4. Step 4: Simplify right side
   2,545.83x = 5,835,979.67
5. Step 5: Solve for x
   x = 5,835,979.67/2,545.83
6. Step 6: Final answer
   x = 2,292.37