Finding the Fourth Proportional to 3,400.42, 5,100.15 and 1,091.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,400.42 : 5,100.15 = 1,091.62 : x
2. Step 2: Convert to fraction form
   3,400.42/5,100.15 = 1,091.62/x
3. Step 3: Cross multiply
   3,400.42x = 5,100.15 × 1,091.62
4. Step 4: Simplify right side
   3,400.42x = 5,567,425.74
5. Step 5: Solve for x
   x = 5,567,425.74/3,400.42
6. Step 6: Final answer
   x = 1,637.28