Finding the Fourth Proportional to 2,570.10, 3,546.74 and 1,391.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.10 : 3,546.74 = 1,391.17 : x
2. Step 2: Convert to fraction form
   2,570.10/3,546.74 = 1,391.17/x
3. Step 3: Cross multiply
   2,570.10x = 3,546.74 × 1,391.17
4. Step 4: Simplify right side
   2,570.10x = 4,934,118.29
5. Step 5: Solve for x
   x = 4,934,118.29/2,570.10
6. Step 6: Final answer
   x = 1,919.82