Finding the Fourth Proportional to 2,987.86, 4,123.24 and 1,661.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,987.86 : 4,123.24 = 1,661.52 : x
2. Step 2: Convert to fraction form
   2,987.86/4,123.24 = 1,661.52/x
3. Step 3: Cross multiply
   2,987.86x = 4,123.24 × 1,661.52
4. Step 4: Simplify right side
   2,987.86x = 6,850,845.72
5. Step 5: Solve for x
   x = 6,850,845.72/2,987.86
6. Step 6: Final answer
   x = 2,292.89