Finding the Fourth Proportional to 2,620.53, 3,615.93 and 1,558.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.53 : 3,615.93 = 1,558.27 : x
2. Step 2: Convert to fraction form
   2,620.53/3,615.93 = 1,558.27/x
3. Step 3: Cross multiply
   2,620.53x = 3,615.93 × 1,558.27
4. Step 4: Simplify right side
   2,620.53x = 5,634,595.24
5. Step 5: Solve for x
   x = 5,634,595.24/2,620.53
6. Step 6: Final answer
   x = 2,150.17