Finding the Fourth Proportional to 3,778.89, 5,665.31 and 1,903.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,778.89 : 5,665.31 = 1,903.77 : x
2. Step 2: Convert to fraction form
   3,778.89/5,665.31 = 1,903.77/x
3. Step 3: Cross multiply
   3,778.89x = 5,665.31 × 1,903.77
4. Step 4: Simplify right side
   3,778.89x = 10,785,409.37
5. Step 5: Solve for x
   x = 10,785,409.37/3,778.89
6. Step 6: Final answer
   x = 2,854.12