Finding the Fourth Proportional to 2,087.02, 2,879.83 and 1,247.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.02 : 2,879.83 = 1,247.57 : x
2. Step 2: Convert to fraction form
   2,087.02/2,879.83 = 1,247.57/x
3. Step 3: Cross multiply
   2,087.02x = 2,879.83 × 1,247.57
4. Step 4: Simplify right side
   2,087.02x = 3,592,772.00
5. Step 5: Solve for x
   x = 3,592,772.00/2,087.02
6. Step 6: Final answer
   x = 1,721.49