Finding the Fourth Proportional to 3,780.22, 5,216.60 and 2,101.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,780.22 : 5,216.60 = 2,101.62 : x
2. Step 2: Convert to fraction form
   3,780.22/5,216.60 = 2,101.62/x
3. Step 3: Cross multiply
   3,780.22x = 5,216.60 × 2,101.62
4. Step 4: Simplify right side
   3,780.22x = 10,963,310.89
5. Step 5: Solve for x
   x = 10,963,310.89/3,780.22
6. Step 6: Final answer
   x = 2,900.18