Finding the Fourth Proportional to 2,289.96, 3,162.72 and 1,542.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.96 : 3,162.72 = 1,542.61 : x
2. Step 2: Convert to fraction form
   2,289.96/3,162.72 = 1,542.61/x
3. Step 3: Cross multiply
   2,289.96x = 3,162.72 × 1,542.61
4. Step 4: Simplify right side
   2,289.96x = 4,878,843.50
5. Step 5: Solve for x
   x = 4,878,843.50/2,289.96
6. Step 6: Final answer
   x = 2,130.54