Finding the Fourth Proportional to 3,146.42, 4,342.54 and 1,820.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,146.42 : 4,342.54 = 1,820.10 : x
2. Step 2: Convert to fraction form
   3,146.42/4,342.54 = 1,820.10/x
3. Step 3: Cross multiply
   3,146.42x = 4,342.54 × 1,820.10
4. Step 4: Simplify right side
   3,146.42x = 7,903,857.05
5. Step 5: Solve for x
   x = 7,903,857.05/3,146.42
6. Step 6: Final answer
   x = 2,512.02