Finding the Fourth Proportional to 2,106.47, 3,155.59 and 1,282.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.47 : 3,155.59 = 1,282.70 : x
2. Step 2: Convert to fraction form
   2,106.47/3,155.59 = 1,282.70/x
3. Step 3: Cross multiply
   2,106.47x = 3,155.59 × 1,282.70
4. Step 4: Simplify right side
   2,106.47x = 4,047,675.29
5. Step 5: Solve for x
   x = 4,047,675.29/2,106.47
6. Step 6: Final answer
   x = 1,921.54