Finding the Fourth Proportional to 3,769.47, 5,657.72 and 1,921.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,769.47 : 5,657.72 = 1,921.86 : x
2. Step 2: Convert to fraction form
   3,769.47/5,657.72 = 1,921.86/x
3. Step 3: Cross multiply
   3,769.47x = 5,657.72 × 1,921.86
4. Step 4: Simplify right side
   3,769.47x = 10,873,336.15
5. Step 5: Solve for x
   x = 10,873,336.15/3,769.47
6. Step 6: Final answer
   x = 2,884.58