Finding the Fourth Proportional to 2,570.50, 3,858.53 and 1,274.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.50 : 3,858.53 = 1,274.71 : x
2. Step 2: Convert to fraction form
   2,570.50/3,858.53 = 1,274.71/x
3. Step 3: Cross multiply
   2,570.50x = 3,858.53 × 1,274.71
4. Step 4: Simplify right side
   2,570.50x = 4,918,506.78
5. Step 5: Solve for x
   x = 4,918,506.78/2,570.50
6. Step 6: Final answer
   x = 1,913.44