Finding the Fourth Proportional to 3,335.15, 5,002.78 and 1,145.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,335.15 : 5,002.78 = 1,145.42 : x
2. Step 2: Convert to fraction form
   3,335.15/5,002.78 = 1,145.42/x
3. Step 3: Cross multiply
   3,335.15x = 5,002.78 × 1,145.42
4. Step 4: Simplify right side
   3,335.15x = 5,730,284.27
5. Step 5: Solve for x
   x = 5,730,284.27/3,335.15
6. Step 6: Final answer
   x = 1,718.15