Finding the Fourth Proportional to 2,547.39, 3,515.16 and 1,427.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.39 : 3,515.16 = 1,427.97 : x
2. Step 2: Convert to fraction form
   2,547.39/3,515.16 = 1,427.97/x
3. Step 3: Cross multiply
   2,547.39x = 3,515.16 × 1,427.97
4. Step 4: Simplify right side
   2,547.39x = 5,019,543.03
5. Step 5: Solve for x
   x = 5,019,543.03/2,547.39
6. Step 6: Final answer
   x = 1,970.47