Finding the Fourth Proportional to 2,127.10, 3,188.20 and 810.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.10 : 3,188.20 = 810.02 : x
2. Step 2: Convert to fraction form
   2,127.10/3,188.20 = 810.02/x
3. Step 3: Cross multiply
   2,127.10x = 3,188.20 × 810.02
4. Step 4: Simplify right side
   2,127.10x = 2,582,505.76
5. Step 5: Solve for x
   x = 2,582,505.76/2,127.10
6. Step 6: Final answer
   x = 1,214.10