Finding the Fourth Proportional to 2,547.02, 3,514.97 and 1,428.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.02 : 3,514.97 = 1,428.10 : x
2. Step 2: Convert to fraction form
   2,547.02/3,514.97 = 1,428.10/x
3. Step 3: Cross multiply
   2,547.02x = 3,514.97 × 1,428.10
4. Step 4: Simplify right side
   2,547.02x = 5,019,723.44
5. Step 5: Solve for x
   x = 5,019,723.44/2,547.02
6. Step 6: Final answer
   x = 1,970.82