Finding the Fourth Proportional to 3,897.79, 5,848.81 and 1,818.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897.79 : 5,848.81 = 1,818.77 : x
2. Step 2: Convert to fraction form
   3,897.79/5,848.81 = 1,818.77/x
3. Step 3: Cross multiply
   3,897.79x = 5,848.81 × 1,818.77
4. Step 4: Simplify right side
   3,897.79x = 10,637,606.37
5. Step 5: Solve for x
   x = 10,637,606.37/3,897.79
6. Step 6: Final answer
   x = 2,729.14