Finding the Fourth Proportional to 2,115.24, 2,919.72 and 1,485.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115.24 : 2,919.72 = 1,485.93 : x
2. Step 2: Convert to fraction form
   2,115.24/2,919.72 = 1,485.93/x
3. Step 3: Cross multiply
   2,115.24x = 2,919.72 × 1,485.93
4. Step 4: Simplify right side
   2,115.24x = 4,338,499.54
5. Step 5: Solve for x
   x = 4,338,499.54/2,115.24
6. Step 6: Final answer
   x = 2,051.07