Finding the Fourth Proportional to 2,776.84, 4,157.16 and 2,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.84 : 4,157.16 = 2,405.50 : x
2. Step 2: Convert to fraction form
   2,776.84/4,157.16 = 2,405.50/x
3. Step 3: Cross multiply
   2,776.84x = 4,157.16 × 2,405.50
4. Step 4: Simplify right side
   2,776.84x = 10,000,048.38
5. Step 5: Solve for x
   x = 10,000,048.38/2,776.84
6. Step 6: Final answer
   x = 3,601.23