Finding the Fourth Proportional to 1,535.02, 2,118.25 and 871.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.02 : 2,118.25 = 871.79 : x
2. Step 2: Convert to fraction form
   1,535.02/2,118.25 = 871.79/x
3. Step 3: Cross multiply
   1,535.02x = 2,118.25 × 871.79
4. Step 4: Simplify right side
   1,535.02x = 1,846,659.67
5. Step 5: Solve for x
   x = 1,846,659.67/1,535.02
6. Step 6: Final answer
   x = 1,203.02