Finding the Fourth Proportional to 2,118.22, 3,174.54 and 1,535.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.22 : 3,174.54 = 1,535.18 : x
2. Step 2: Convert to fraction form
   2,118.22/3,174.54 = 1,535.18/x
3. Step 3: Cross multiply
   2,118.22x = 3,174.54 × 1,535.18
4. Step 4: Simplify right side
   2,118.22x = 4,873,490.32
5. Step 5: Solve for x
   x = 4,873,490.32/2,118.22
6. Step 6: Final answer
   x = 2,300.75