Finding the Fourth Proportional to 3,385.55, 5,081.05 and 1,742.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,385.55 : 5,081.05 = 1,742.56 : x
2. Step 2: Convert to fraction form
   3,385.55/5,081.05 = 1,742.56/x
3. Step 3: Cross multiply
   3,385.55x = 5,081.05 × 1,742.56
4. Step 4: Simplify right side
   3,385.55x = 8,854,057.45
5. Step 5: Solve for x
   x = 8,854,057.45/3,385.55
6. Step 6: Final answer
   x = 2,615.25