Finding the Fourth Proportional to 3,603.89, 4,977.79 and 2,607.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,603.89 : 4,977.79 = 2,607.59 : x
2. Step 2: Convert to fraction form
   3,603.89/4,977.79 = 2,607.59/x
3. Step 3: Cross multiply
   3,603.89x = 4,977.79 × 2,607.59
4. Step 4: Simplify right side
   3,603.89x = 12,980,041.35
5. Step 5: Solve for x
   x = 12,980,041.35/3,603.89
6. Step 6: Final answer
   x = 3,601.67