Finding the Fourth Proportional to 1,678.32, 2,515.86 and 1,062.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678.32 : 2,515.86 = 1,062.72 : x
2. Step 2: Convert to fraction form
   1,678.32/2,515.86 = 1,062.72/x
3. Step 3: Cross multiply
   1,678.32x = 2,515.86 × 1,062.72
4. Step 4: Simplify right side
   1,678.32x = 2,673,654.74
5. Step 5: Solve for x
   x = 2,673,654.74/1,678.32
6. Step 6: Final answer
   x = 1,593.05