Finding the Fourth Proportional to 3,719.89, 5,574.06 and 2,156.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,719.89 : 5,574.06 = 2,156.02 : x
2. Step 2: Convert to fraction form
   3,719.89/5,574.06 = 2,156.02/x
3. Step 3: Cross multiply
   3,719.89x = 5,574.06 × 2,156.02
4. Step 4: Simplify right side
   3,719.89x = 12,017,769.39
5. Step 5: Solve for x
   x = 12,017,769.39/3,719.89
6. Step 6: Final answer
   x = 3,230.68