Finding the Fourth Proportional to 2,107.45, 3,156.90 and 1,283.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.45 : 3,156.90 = 1,283.10 : x
2. Step 2: Convert to fraction form
   2,107.45/3,156.90 = 1,283.10/x
3. Step 3: Cross multiply
   2,107.45x = 3,156.90 × 1,283.10
4. Step 4: Simplify right side
   2,107.45x = 4,050,618.39
5. Step 5: Solve for x
   x = 4,050,618.39/2,107.45
6. Step 6: Final answer
   x = 1,922.05