Finding the Fourth Proportional to 2,160.63, 3,225.17 and 1,854.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.63 : 3,225.17 = 1,854.45 : x
2. Step 2: Convert to fraction form
   2,160.63/3,225.17 = 1,854.45/x
3. Step 3: Cross multiply
   2,160.63x = 3,225.17 × 1,854.45
4. Step 4: Simplify right side
   2,160.63x = 5,980,921.14
5. Step 5: Solve for x
   x = 5,980,921.14/2,160.63
6. Step 6: Final answer
   x = 2,768.14