Finding the Fourth Proportional to 2,068.32, 2,854.56 and 1,438.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.32 : 2,854.56 = 1,438.47 : x
2. Step 2: Convert to fraction form
   2,068.32/2,854.56 = 1,438.47/x
3. Step 3: Cross multiply
   2,068.32x = 2,854.56 × 1,438.47
4. Step 4: Simplify right side
   2,068.32x = 4,106,198.92
5. Step 5: Solve for x
   x = 4,106,198.92/2,068.32
6. Step 6: Final answer
   x = 1,985.28