Finding the Fourth Proportional to 3,934.57, 5,902.71 and 1,854.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,934.57 : 5,902.71 = 1,854.58 : x
2. Step 2: Convert to fraction form
   3,934.57/5,902.71 = 1,854.58/x
3. Step 3: Cross multiply
   3,934.57x = 5,902.71 × 1,854.58
4. Step 4: Simplify right side
   3,934.57x = 10,947,047.91
5. Step 5: Solve for x
   x = 10,947,047.91/3,934.57
6. Step 6: Final answer
   x = 2,782.27