Finding the Fourth Proportional to 3,781.60, 5,214.18 and 2,662.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,781.60 : 5,214.18 = 2,662.72 : x
2. Step 2: Convert to fraction form
   3,781.60/5,214.18 = 2,662.72/x
3. Step 3: Cross multiply
   3,781.60x = 5,214.18 × 2,662.72
4. Step 4: Simplify right side
   3,781.60x = 13,883,901.37
5. Step 5: Solve for x
   x = 13,883,901.37/3,781.60
6. Step 6: Final answer
   x = 3,671.44