Finding the Fourth Proportional to 3,781.79, 5,216.03 and 2,663.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,781.79 : 5,216.03 = 2,663.05 : x
2. Step 2: Convert to fraction form
   3,781.79/5,216.03 = 2,663.05/x
3. Step 3: Cross multiply
   3,781.79x = 5,216.03 × 2,663.05
4. Step 4: Simplify right side
   3,781.79x = 13,890,548.69
5. Step 5: Solve for x
   x = 13,890,548.69/3,781.79
6. Step 6: Final answer
   x = 3,673.01