Finding the Fourth Proportional to 3,013.86, 4,158.86 and 1,687.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,013.86 : 4,158.86 = 1,687.34 : x
2. Step 2: Convert to fraction form
   3,013.86/4,158.86 = 1,687.34/x
3. Step 3: Cross multiply
   3,013.86x = 4,158.86 × 1,687.34
4. Step 4: Simplify right side
   3,013.86x = 7,017,410.83
5. Step 5: Solve for x
   x = 7,017,410.83/3,013.86
6. Step 6: Final answer
   x = 2,328.38