Finding the Fourth Proportional to 2,106.70, 3,162.90 and 1,230.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.70 : 3,162.90 = 1,230.10 : x
2. Step 2: Convert to fraction form
   2,106.70/3,162.90 = 1,230.10/x
3. Step 3: Cross multiply
   2,106.70x = 3,162.90 × 1,230.10
4. Step 4: Simplify right side
   2,106.70x = 3,890,683.29
5. Step 5: Solve for x
   x = 3,890,683.29/2,106.70
6. Step 6: Final answer
   x = 1,846.81