Finding the Fourth Proportional to 2,547.46, 3,514.61 and 1,428.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.46 : 3,514.61 = 1,428.24 : x
2. Step 2: Convert to fraction form
   2,547.46/3,514.61 = 1,428.24/x
3. Step 3: Cross multiply
   2,547.46x = 3,514.61 × 1,428.24
4. Step 4: Simplify right side
   2,547.46x = 5,019,710.16
5. Step 5: Solve for x
   x = 5,019,710.16/2,547.46
6. Step 6: Final answer
   x = 1,970.48