Finding the Fourth Proportional to 3,402.34, 5,103.90 and 2,085.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,402.34 : 5,103.90 = 2,085.48 : x
2. Step 2: Convert to fraction form
   3,402.34/5,103.90 = 2,085.48/x
3. Step 3: Cross multiply
   3,402.34x = 5,103.90 × 2,085.48
4. Step 4: Simplify right side
   3,402.34x = 10,644,081.37
5. Step 5: Solve for x
   x = 10,644,081.37/3,402.34
6. Step 6: Final answer
   x = 3,128.46