Finding the Fourth Proportional to 1,948.76, 2,686.86 and 1,284.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,948.76 : 2,686.86 = 1,284.56 : x
2. Step 2: Convert to fraction form
   1,948.76/2,686.86 = 1,284.56/x
3. Step 3: Cross multiply
   1,948.76x = 2,686.86 × 1,284.56
4. Step 4: Simplify right side
   1,948.76x = 3,451,419.45
5. Step 5: Solve for x
   x = 3,451,419.45/1,948.76
6. Step 6: Final answer
   x = 1,771.09