Finding the Fourth Proportional to 3,607.47, 4,978.85 and 2,612.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,607.47 : 4,978.85 = 2,612.39 : x
2. Step 2: Convert to fraction form
   3,607.47/4,978.85 = 2,612.39/x
3. Step 3: Cross multiply
   3,607.47x = 4,978.85 × 2,612.39
4. Step 4: Simplify right side
   3,607.47x = 13,006,660.00
5. Step 5: Solve for x
   x = 13,006,660.00/3,607.47
6. Step 6: Final answer
   x = 3,605.48