Finding the Fourth Proportional to 2,644, 3,962.25 and 1,810.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644 : 3,962.25 = 1,810.30 : x
2. Step 2: Convert to fraction form
   2,644/3,962.25 = 1,810.30/x
3. Step 3: Cross multiply
   2,644x = 3,962.25 × 1,810.30
4. Step 4: Simplify right side
   2,644x = 7,172,861.18
5. Step 5: Solve for x
   x = 7,172,861.18/2,644
6. Step 6: Final answer
   x = 2,712.88