Finding the Fourth Proportional to 3,777.39, 5,212.80 and 2,098.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,777.39 : 5,212.80 = 2,098.91 : x
2. Step 2: Convert to fraction form
   3,777.39/5,212.80 = 2,098.91/x
3. Step 3: Cross multiply
   3,777.39x = 5,212.80 × 2,098.91
4. Step 4: Simplify right side
   3,777.39x = 10,941,171.98
5. Step 5: Solve for x
   x = 10,941,171.98/3,777.39
6. Step 6: Final answer
   x = 2,896.49