Finding the Fourth Proportional to 1,678.17, 2,514.81 and 1,060.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678.17 : 2,514.81 = 1,060.35 : x
2. Step 2: Convert to fraction form
   1,678.17/2,514.81 = 1,060.35/x
3. Step 3: Cross multiply
   1,678.17x = 2,514.81 × 1,060.35
4. Step 4: Simplify right side
   1,678.17x = 2,666,578.78
5. Step 5: Solve for x
   x = 2,666,578.78/1,678.17
6. Step 6: Final answer
   x = 1,588.98