Finding the Fourth Proportional to 2,620.47, 3,616.25 and 1,572.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.47 : 3,616.25 = 1,572.53 : x
2. Step 2: Convert to fraction form
   2,620.47/3,616.25 = 1,572.53/x
3. Step 3: Cross multiply
   2,620.47x = 3,616.25 × 1,572.53
4. Step 4: Simplify right side
   2,620.47x = 5,686,670.65
5. Step 5: Solve for x
   x = 5,686,670.65/2,620.47
6. Step 6: Final answer
   x = 2,170.10