Finding the Fourth Proportional to 1,540.42, 2,120.43 and 1,343.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540.42 : 2,120.43 = 1,343.59 : x
2. Step 2: Convert to fraction form
   1,540.42/2,120.43 = 1,343.59/x
3. Step 3: Cross multiply
   1,540.42x = 2,120.43 × 1,343.59
4. Step 4: Simplify right side
   1,540.42x = 2,848,996.23
5. Step 5: Solve for x
   x = 2,848,996.23/1,540.42
6. Step 6: Final answer
   x = 1,849.49