Finding the Fourth Proportional to 3,401.38, 5,101.80 and 1,092.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.38 : 5,101.80 = 1,092.70 : x
2. Step 2: Convert to fraction form
   3,401.38/5,101.80 = 1,092.70/x
3. Step 3: Cross multiply
   3,401.38x = 5,101.80 × 1,092.70
4. Step 4: Simplify right side
   3,401.38x = 5,574,736.86
5. Step 5: Solve for x
   x = 5,574,736.86/3,401.38
6. Step 6: Final answer
   x = 1,638.96