Finding the Fourth Proportional to 3,602.50, 4,970.76 and 2,185.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,602.50 : 4,970.76 = 2,185.80 : x
2. Step 2: Convert to fraction form
   3,602.50/4,970.76 = 2,185.80/x
3. Step 3: Cross multiply
   3,602.50x = 4,970.76 × 2,185.80
4. Step 4: Simplify right side
   3,602.50x = 10,865,087.21
5. Step 5: Solve for x
   x = 10,865,087.21/3,602.50
6. Step 6: Final answer
   x = 3,015.99