Finding the Fourth Proportional to 1,820.16, 2,731.62 and 1,459.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820.16 : 2,731.62 = 1,459.31 : x
2. Step 2: Convert to fraction form
   1,820.16/2,731.62 = 1,459.31/x
3. Step 3: Cross multiply
   1,820.16x = 2,731.62 × 1,459.31
4. Step 4: Simplify right side
   1,820.16x = 3,986,280.38
5. Step 5: Solve for x
   x = 3,986,280.38/1,820.16
6. Step 6: Final answer
   x = 2,190.07