Finding the Fourth Proportional to 3,818.40, 5,271.23 and 2,402.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,818.40 : 5,271.23 = 2,402.77 : x
2. Step 2: Convert to fraction form
   3,818.40/5,271.23 = 2,402.77/x
3. Step 3: Cross multiply
   3,818.40x = 5,271.23 × 2,402.77
4. Step 4: Simplify right side
   3,818.40x = 12,665,553.31
5. Step 5: Solve for x
   x = 12,665,553.31/3,818.40
6. Step 6: Final answer
   x = 3,316.98