Finding the Fourth Proportional to 3,146.58, 4,342.82 and 1,821.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,146.58 : 4,342.82 = 1,821.10 : x
2. Step 2: Convert to fraction form
   3,146.58/4,342.82 = 1,821.10/x
3. Step 3: Cross multiply
   3,146.58x = 4,342.82 × 1,821.10
4. Step 4: Simplify right side
   3,146.58x = 7,908,709.50
5. Step 5: Solve for x
   x = 7,908,709.50/3,146.58
6. Step 6: Final answer
   x = 2,513.43