Finding the Fourth Proportional to 2,621.50, 3,617.67 and 1,573.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.50 : 3,617.67 = 1,573.57 : x
2. Step 2: Convert to fraction form
   2,621.50/3,617.67 = 1,573.57/x
3. Step 3: Cross multiply
   2,621.50x = 3,617.67 × 1,573.57
4. Step 4: Simplify right side
   2,621.50x = 5,692,656.98
5. Step 5: Solve for x
   x = 5,692,656.98/2,621.50
6. Step 6: Final answer
   x = 2,171.53