Finding the Fourth Proportional to 2,807.05, 3,871.63 and 2,060.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,807.05 : 3,871.63 = 2,060.77 : x
2. Step 2: Convert to fraction form
   2,807.05/3,871.63 = 2,060.77/x
3. Step 3: Cross multiply
   2,807.05x = 3,871.63 × 2,060.77
4. Step 4: Simplify right side
   2,807.05x = 7,978,538.96
5. Step 5: Solve for x
   x = 7,978,538.96/2,807.05
6. Step 6: Final answer
   x = 2,842.32