Finding the Fourth Proportional to 3,902.58, 5,385.69 and 2,134.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,902.58 : 5,385.69 = 2,134.25 : x
2. Step 2: Convert to fraction form
   3,902.58/5,385.69 = 2,134.25/x
3. Step 3: Cross multiply
   3,902.58x = 5,385.69 × 2,134.25
4. Step 4: Simplify right side
   3,902.58x = 11,494,402.15
5. Step 5: Solve for x
   x = 11,494,402.15/3,902.58
6. Step 6: Final answer
   x = 2,945.33