Finding the Fourth Proportional to 2,655.12, 3,984.69 and 1,820.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,655.12 : 3,984.69 = 1,820.19 : x
2. Step 2: Convert to fraction form
   2,655.12/3,984.69 = 1,820.19/x
3. Step 3: Cross multiply
   2,655.12x = 3,984.69 × 1,820.19
4. Step 4: Simplify right side
   2,655.12x = 7,252,892.89
5. Step 5: Solve for x
   x = 7,252,892.89/2,655.12
6. Step 6: Final answer
   x = 2,731.66