Finding the Fourth Proportional to 2,578.52, 3,867.60 and 934.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.52 : 3,867.60 = 934.76 : x
2. Step 2: Convert to fraction form
   2,578.52/3,867.60 = 934.76/x
3. Step 3: Cross multiply
   2,578.52x = 3,867.60 × 934.76
4. Step 4: Simplify right side
   2,578.52x = 3,615,277.78
5. Step 5: Solve for x
   x = 3,615,277.78/2,578.52
6. Step 6: Final answer
   x = 1,402.07