Finding the Fourth Proportional to 2,069.51, 2,854.78 and 1,361.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.51 : 2,854.78 = 1,361.47 : x
2. Step 2: Convert to fraction form
   2,069.51/2,854.78 = 1,361.47/x
3. Step 3: Cross multiply
   2,069.51x = 2,854.78 × 1,361.47
4. Step 4: Simplify right side
   2,069.51x = 3,886,690.52
5. Step 5: Solve for x
   x = 3,886,690.52/2,069.51
6. Step 6: Final answer
   x = 1,878.07