Finding the Fourth Proportional to 2,656.86, 3,985.14 and 1,013.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.86 : 3,985.14 = 1,013.58 : x
2. Step 2: Convert to fraction form
   2,656.86/3,985.14 = 1,013.58/x
3. Step 3: Cross multiply
   2,656.86x = 3,985.14 × 1,013.58
4. Step 4: Simplify right side
   2,656.86x = 4,039,238.28
5. Step 5: Solve for x
   x = 4,039,238.28/2,656.86
6. Step 6: Final answer
   x = 1,520.30