Finding the Fourth Proportional to 3,606.08, 4,978.06 and 2,113.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,606.08 : 4,978.06 = 2,113.80 : x
2. Step 2: Convert to fraction form
   3,606.08/4,978.06 = 2,113.80/x
3. Step 3: Cross multiply
   3,606.08x = 4,978.06 × 2,113.80
4. Step 4: Simplify right side
   3,606.08x = 10,522,623.23
5. Step 5: Solve for x
   x = 10,522,623.23/3,606.08
6. Step 6: Final answer
   x = 2,918.02