Finding the Fourth Proportional to 2,120.19, 3,176.52 and 1,808.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120.19 : 3,176.52 = 1,808.89 : x
2. Step 2: Convert to fraction form
   2,120.19/3,176.52 = 1,808.89/x
3. Step 3: Cross multiply
   2,120.19x = 3,176.52 × 1,808.89
4. Step 4: Simplify right side
   2,120.19x = 5,745,967.32
5. Step 5: Solve for x
   x = 5,745,967.32/2,120.19
6. Step 6: Final answer
   x = 2,710.12