Finding the Fourth Proportional to 2,105.48, 3,156.70 and 1,283.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.48 : 3,156.70 = 1,283.56 : x
2. Step 2: Convert to fraction form
   2,105.48/3,156.70 = 1,283.56/x
3. Step 3: Cross multiply
   2,105.48x = 3,156.70 × 1,283.56
4. Step 4: Simplify right side
   2,105.48x = 4,051,813.85
5. Step 5: Solve for x
   x = 4,051,813.85/2,105.48
6. Step 6: Final answer
   x = 1,924.41